Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2015	Apr. 27, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Registrant Name	CASS INFORMATION SYSTEMS INC
Entity Central Index Key	0000708781
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		11,476,082

CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 11,230	$ 11,307
Interest-bearing deposits in other financial institutions	166,192	200,966
Federal funds sold and other short-term investments	31,093	82,062
Cash and cash equivalents	208,515	294,335
Securities available-for-sale, at fair value	322,627	356,141
Loans	683,537	669,346
Less: Allowance for loan losses	11,898	11,894
Loans, net	671,639	657,452
Premises and equipment, net	17,817	16,909
Investment in bank-owned life insurance	15,552	15,429
Payments in excess of funding	125,572	120,227
Goodwill	11,590	11,590
Other intangible assets, net	2,661	2,762
Other assets	24,775	25,886
Total assets	1,400,748	1,500,731
Liabilities and Shareholders' Equity
Noninterest-bearing	160,555	158,999
Interest-bearing	454,523	459,200
Total deposits	615,078	618,199
Accounts and drafts payable	556,826	655,428
Other liabilities	28,654	26,672
Total liabilities	1,200,558	1,300,299
Shareholders' Equity:
Preferred stock, par value $.50 per share; 2,000,000 shares authorized and no shares issued
Common stock, par value $.50 per share; 40,000,000 shares authorized and 11,931,147 shares issued at March 31, 2015 and December 31, 2014	5,966	5,966
Additional paid-in capital	125,097	126,169
Retained earnings	93,762	90,635
Common shares in treasury, at cost (461,252 shares at March 31, 2015 and 428,572 shares at December 31, 2014)	(15,262)	(12,707)
Accumulated other comprehensive loss	(9,373)	(9,631)
Total shareholders' equity	200,190	200,432
Total liabilities and shareholders' equity	$ 1,400,748	$ 1,500,731

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
CONSOLIDATED BALANCE SHEETS [Abstract]
Preferred stock, par value per share	$ 0.50	$ 0.50
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Common stock, par value per share	$ 0.50	$ 0.50
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	11,931,147	11,931,147
Treasury stock, shares	461,252	428,572

CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fee Revenue and Other Income:
Information services payment and processing revenue	$ 19,418	$ 18,397
Bank service fees	301	285
Gains on sales of securities	949
Other	164	893
Total fee revenue and other income	20,832	19,575
Interest Income:
Interest and fees on loans	7,086	7,305
Interest and dividends on securities:
Taxable	3	5
Exempt from federal income taxes	2,303	2,310
Interest on federal funds sold and other short-term investments	160	152
Total interest income	9,552	9,772
Interest Expense:
Interest on deposits	591	625
Net interest income	8,961	9,147
Provision for loan losses
Net interest income after provision for loan losses	8,961	9,147
Total net revenue	29,793	28,722
Operating Expense:
Salaries and employee benefits	17,326	16,187
Occupancy	837	806
Equipment	1,071	1,026
Amortization of intangible assets	101	120
Other operating expense	2,973	2,886
Total operating expense	22,308	21,025
Income before income tax expense	7,485	7,697
Income tax expense	1,946	1,886
Net income	$ 5,539	$ 5,811
Basic earnings per share	$ 0.48	$ 0.51
Diluted earnings per share	$ 0.48	$ 0.50

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Comprehensive income:
Net income	$ 5,539	$ 5,811
Other comprehensive income:
Net unrealized gain (loss) on securities available-for-sale	1,496	3,688
Tax effect	(557)	(1,370)
Reclassification adjustments for gains included in net income	(949)
Tax effect	332
Foreign currency translation adjustments	(64)	(5)
Total comprehensive income	$ 5,797	$ 8,124

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows From Operating Activities:
Net income	$ 5,539	$ 5,811
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,081	1,977
Net gains on sales of securities	(949)
Stock-based compensation expense	517	519
Increase in income tax liability	31	365
Increase in pension liability	1,210	587
Other operating activities, net	1,475	(479)
Net cash provided by operating activities	9,904	8,780
Cash Flows From Investing Activities:
Proceeds from sales of securities available-for-sale	45,198
Proceeds from maturities of securities available-for-sale	7,810	4,080
Purchase of securities available-for-sale	(19,297)	(8,954)
Net increase in loans	(14,187)	(12,759)
Increase in payments in excess of funding	(5,345)	(23,022)
Purchases of premises and equipment, net	(1,624)	(907)
Net cash provided by (used in) investing activities	12,555	(41,562)
Cash Flows From Financing Activities:
Net increase in noninterest-bearing demand deposits	1,556	15,546
Net decrease in interest-bearing demand and savings deposits	(614)	(18,770)
Net (decrease) increase in time deposits	(4,063)	1,931
Net (decrease) increase in accounts and drafts payable	(98,602)	10,742
Cash dividends paid	(2,412)	(2,306)
Purchase of common shares for treasury	(3,358)
Other financing activities, net	(786)	(462)
Net cash (used in) provided by financing activities	(108,279)	6,681
Net decrease in cash and cash equivalents	(85,820)	(26,101)
Cash and cash equivalents at beginning of period	294,335	225,262
Cash and cash equivalents at end of period	208,515	199,161
Supplemental information:
Cash paid for interest	582	618
Cash paid for income taxes	$ 1,942	$ 1,323

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2015
Basis of Presentation [Abstract]
Basis of Presentation	Note 1 - Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included. For further information, refer to the audited consolidated financial statements and related footnotes included in Cass Information System, Inc.'s (the “Company” or “Cass”) Annual Report on Form 10-K for the year ended December 31, 2014.

Intangible Assets

3 Months Ended

Mar. 31, 2015

Intangible Assets [Abstract]

Intangible Assets

Note 2 – Intangible Assets

The Company accounts for intangible assets in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 350, “Goodwill and Other Intangible Assets,” (“FASB ASC 350”), which requires that intangibles with indefinite useful lives be tested annually for impairment and those with finite useful lives be amortized over their useful lives.

Details of the Company's intangible assets are as follows:

		March 31, 2015				December 31, 2014
	Gross Carrying		Accumulated			Gross Carrying		Accumulated
*(In thousands)*	Amount		Amortization			Amount		Amortization
Assets eligible for amortization:
Customer lists		3,933		(1,785	)	$	3,933	$	(1,705)
Patent		23		(1	)		23		(1)
Non-compete agreements		261		(170	)		261		(157)
Software		234		(234	)		234		(234)
Other		500		(100	)		500		(92)
Unamortized intangible assets:
Goodwill¹		11,817		(227	)		11,817		(227)
Total intangible assets		16,768		(2,517	)	$	16,768	$	(2,416)

¹	Amortization through December 31, 2001 prior to adoption of FASB ASC 350.

The customer lists are amortized over seven and ten years; the patent over 18 years; the non-compete agreements over five years; software over three years; and other intangible assets over fifteen years. Amortization of intangible assets amounted to $101,000 and $120,000 for the three-month periods ended March 31, 2015 and 2014, respectively. Estimated future amortization of intangibles is as follows: $405,000 in 2015 and 2016, and $353,000 in each of 2017, 2018 and 2019.

Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

Note 3 – Earnings Per Share

Basic earnings per share is computed by dividing net income by the weighted-average number of common shares outstanding. Diluted earnings per share is computed by dividing net income by the sum of the weighted-average number of common shares outstanding and the weighted-average number of potential common shares outstanding. There were no anti-dilutive shares in the three months ended March 31, 2015 and 2014. The calculations of basic and diluted earnings per share are as follows:

	Three Months Ended
	March 31,
*(In thousands except share and per share data)*	2015		2014
Basic
Net income	$	5,539	$	5,811
Weighted-average common shares outstanding		11,440,356		11,478,116
Basic earnings per share	$	.48	$	.51
Diluted
Net income	$	5,539	$	5,811
Weighted-average common shares outstanding		11,440,356		11,478,116
Effect of dilutive restricted stock and stock appreciation rights		161,497		194,707
Weighted-average common shares outstanding assuming dilution		11,601,853		11,672,823
Diluted earnings per share	$	.48	$	.50

Stock Repurchases	3 Months Ended
Stock Repurchases	Mar. 31, 2015
Stock Repurchases [Abstract]
Stock Repurchases	Note 4 – Stock Repurchases The Company maintains a treasury stock buyback program pursuant to which the Board of Directors has authorized the repurchase of up to 500,000 shares of the Company's common stock. The Company repurchased 69,288 and 0 shares during the three-month periods ended March 31, 2015 and 2014, respectively. As of March 31, 2015, 410,752 shares remained available for repurchase under the program. Repurchases may be made in the open market or through negotiated transactions from time to time depending on market conditions.

Industry Segment Information

3 Months Ended

Mar. 31, 2015

Industry Segment Information [Abstract]

Industry Segment Information

Note 5 – Industry Segment Information

The services provided by the Company are classified into two reportable segments: Information Services and Banking Services. Each of these segments provides distinct services that are marketed through different channels. They are managed separately due to their unique service, processing and capital requirements.

The Information Services segment provides transportation, energy, telecommunication, and environmental invoice processing and payment services to large corporations. The Banking Services segment provides banking services primarily to privately held businesses and churches.

The Company's accounting policies for segments are the same as those described in the summary of significant accounting policies in the Company's Annual Report on Form 10-K for the year ended December 31, 2014. Management evaluates segment performance based on net income after allocations for corporate expenses and income taxes. Transactions between segments are accounted for at what management believes to be fair value.

Substantially all revenue originates from, and all long-lived assets are located within the United States, and no revenue from any customer of any segment exceeds 10% of the Company's consolidated revenue.

Assets represent actual assets owned by Information Services and Banking Services and there is no allocation methodology used. Segment interest from customers is the actual interest earned on the loans owned by Information Services and Banking Services, respectively.

Summarized information about the Company's operations in each industry segment is as follows:

					Corporate,
	Information		Banking		Eliminations
*(In thousands)*	Services		Services		and Other			Total
Quarter Ended March 31, 2015
Fee revenue and other income:
Income from customers	$	24,274	$	5,519	$	—		$	29,793
Intersegment income (expense)		2,194		423		(2,617	)		—
Net income		3,816		1,723		—			5,539
Goodwill		11,454		136		—			11,590
Other intangible assets, net		2,661		—		—			2,661
Total assets		686,492		724,292		(10,036	)		1,400,748
Quarter Ended March 31, 2014
Fee revenue and other income
Income from customers	$	23,215	$	5,507	$	—		$	28,722
Intersegment income (expense)		2,144		354		(2,498	)		—
Net income		4,100		1,711		—			5,811
Goodwill		11,454		136		—			11,590
Other intangible assets, net		3,102		—		—			3,102
Total assets		672,248		679,391		(9,712	)		1,341,927

Loans by Type

3 Months Ended

Mar. 31, 2015

Loans by Type [Abstract]

Loans by Type

Note 6 – Loans by Type

A summary of loan categories is as follows:

	March 31,		December 31,
*(In thousands)*	2015		2014
Commercial and industrial	$	221,645	$	203,350
Real estate
Commercial:
Mortgage		111,709		117,754
Construction		—		—
Church, church-related:
Mortgage		311,100		305,887
Construction		16,424		18,612
Industrial Revenue Bonds		22,582		23,348
Other		77		395
Total loans	$	683,537	$	669,346

The following table presents the aging of loans by loan categories at March 31, 2015 and December 31, 2014:

	Performing						Nonperforming
								90 Days
				30-59		60-89		and		Non-	Total
*(In thousands)*	Current		Days		Days		Over		accrual		Loans
March 31, 2015
Commercial and industrial	$	221,557	$	—	$	—	$	—	$	88	$	221,645
Real estate
Commercial:
Mortgage		108,632		—		—		—		3,077		111,709
Construction		—		—		—		—		—		—
Church, church-related:
Mortgage		310,979		—		—		—		121		311,100
Construction		16,424		—		—		—		—		16,424
Industrial Revenue Bonds		22,582		—		—		—		—		22,582
Other		77		—		—		—		—		77
Total	$	680,251	$	—	$	—	$	—	$	3,286	$	683,537
December 31, 2014
Commercial and industrial	$	203,350	$	—	$	—	$	—	$	—	$	203,350
Real estate
Commercial:
Mortgage		117,393		—		—		—		361		117,754
Construction		—		—		—		—		—		—
Church, church-related:
Mortgage		305,760		—		—		—		127		305,887
Construction		18,612		—		—		—		—		18,612
Industrial Revenue Bonds		23,348		—		—		—		—		23,348
Other		395		—		—		—		—		395
Total	$	668,858	$	—	$	—	$	—	$	488	$	669,346

The following table presents the credit exposure of the loan portfolio as of March 31, 2015 and December 31, 2014:

	Loans		Performing		Nonperforming
	Subject to		Loans Subject to		Loans Subject
	Normal		Special		to Special
*(In thousands)*	Monitoring¹		Monitoring²		Monitoring²		Total Loans
March 31, 2015
Commercial and industrial	$	217,740	$	3,817	$	88	$	221,645
Real estate
Commercial:
Mortgage		97,709		10,923		3,077		111,709
Construction		—		—		—		—
Church, church-related:
Mortgage		309,527		1,452		121		311,100
Construction		16,424		—		—		16,424
Industrial Revenue Bonds		22,582		—		—		22,582
Other		77		—		—		77
Total	$	664,059	$	16,192	$	3,286	$	683,537
December 31, 2014
Commercial and industrial	$	199,837	$	3,513	$	—	$	203,350
Real estate
Commercial:
Mortgage		103,097		14,296		361		117,754
Construction		—		—		—		—
Church, church-related:
Mortgage		304,219		1,541		127		305,887
Construction		18,612		—		—		18,612
Industrial Revenue Bonds		23,348		—		—		23,348
Other		395		—		—		395
Total	$	649,508	$	19,350	$	488	$	669,346

¹	Loans subject to normal monitoring involve borrowers of acceptable-to-strong credit quality and risk, who have the apparent ability to satisfy their loan obligations.

²	Loans subject to special monitoring possess some credit deficiency or potential weakness which requires a high level of management attention.

Impaired loans consist primarily of nonaccrual loans, loans greater than 90 days past due and still accruing interest and troubled debt restructurings, both performing and nonperforming. Troubled debt restructuring involves the granting of a concession to a borrower experiencing financial difficulty resulting in the modification of terms of the loan, such as changes in payment schedule or interest rate. Management measures impairment in accordance with FASB ASC 310, “Allowance for Credit Losses.” At March 31, 2015 and December 31, 2014, all impaired loans were evaluated based on the fair value of the collateral. The fair value of the collateral is based upon an observable market price or current appraised value and therefore, the Company classifies these assets as nonrecurring Level 3. There were no loans delinquent 90 days or more and still accruing interest at March 31, 2015 and December 31, 2014. There were no loans classified as troubled debt restructuring at March 31, 2015 and December 31, 2014.

There were no foreclosed loans recorded as other real estate owned (included in other assets) as of March 31, 2015, and December 31, 2014.

The following table presents the recorded investment and unpaid principal balance for impaired loans at March 31, 2015 and December 31, 2014:

			Unpaid		Related
	Recorded		Principal		Allowance for
*(In thousands)*	Investment		Balance		Loan Losses
March 31, 2015
Commercial and industrial:
Nonaccrual	$	88	$	88	$	—
Real estate
Commercial – Mortgage:
Nonaccrual		3,077		3,077		1,127
Church – Mortgage:
Nonaccrual		121		121		121
Total impaired loans	$	3,286	$	3,286	$	1,248
December 31, 2014
Commercial and industrial:
Nonaccrual	$	—	$	—	$	—
Real estate
Commercial – Mortgage:
Nonaccrual		361		361		—
Church – Mortgage:
Nonaccrual		127		127		127
Total impaired loans	$	488	$	488	$	127

A summary of the activity in the allowance for loan losses from December 31, 2014 to March 31, 2015 is as follows:

	December 31,		Charge-							March 31,
*(In thousands)*	2014		Offs		Recoveries		Provision			2015
Commercial and industrial	$	3,515	$	—	$	3	$	323		$	3,841
Real estate
Commercial:
Mortgage		3,060		—		—		(152	)		2,908
Construction		—		—		—		—			—
Church, church-related:
Mortgage		4,016		—		1		56			4,073
Construction		140		—		—		(17	)		123
Industrial Revenue Bond		394		—		—		(13	)		381
Other		769		—		—		(197	)		572
Total	$	11,894	$	—	$	4	$	—		$	11,898

Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies [Abstract]

Commitments and Contingencies

Note 7 – Commitments and Contingencies

In the normal course of business, the Company is party to activities that contain credit, market and operational risks that are not reflected in whole or in part in the Company's consolidated financial statements. Such activities include traditional off-balance sheet credit-related financial instruments and commitments under operating leases. These financial instruments include commitments to extend credit, commercial letters of credit and standby letters of credit. The Company's maximum potential exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit, commercial letters of credit and standby letters of credit is represented by the contractual amounts of those instruments. At March 31, 2015 and December 31, 2014, no amounts have been accrued for any estimated losses for these instruments.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commercial and standby letters of credit are conditional commitments issued by the Company or its subsidiaries to guarantee the performance of a customer to a third party. These off-balance sheet financial instruments generally have fixed expiration dates or other termination clauses and may require payment of a fee. At March 31, 2015, the balance of unused loan commitments, standby and commercial letters of credit were $12,917,000, $11,754,000, and $2,017,000, respectively. Since some of the financial instruments may expire without being drawn upon, the total amounts do not necessarily represent future cash requirements. Commitments to extend credit and letters of credit are subject to the same underwriting standards as those financial instruments included on the consolidated balance sheets. The Company evaluates each customer's credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of the credit, is based on management's credit evaluation of the borrower. Collateral held varies, but is generally accounts receivable, inventory, residential or income-producing commercial property or equipment. In the event of nonperformance, the Company or its subsidiaries may obtain and liquidate the collateral to recover amounts paid under guarantees on these financial instruments.

The following table summarizes contractual cash obligations of the Company related to operating lease commitments and time deposits at March 31, 2015:

	Amount of Commitment Expiration per Period
				Less than		1-3		3-5		Over 5
*(In thousands)*		Total		1 Year		Years		Years		Years
Operating lease commitments	$	7,161	$	1,343	$	2,409	$	1,545	$	1,864
Time deposits		75,712		60,779		13,486		1,447		—
Total	$	82,873	$	62,122	$	15,895	$	2,992	$	1,864

The Company and its subsidiaries are involved in various pending legal actions and proceedings in which claims for damages are asserted. Management, after discussion with legal counsel, believes the ultimate resolution of these legal actions and proceedings will not have a material effect upon the Company's consolidated financial position or results of operations.

Stock-Based Compensation

3 Months Ended

Mar. 31, 2015

Stock-Based Compensation [Abstract]

Stock-Based Compensation

Note 8 – Stock-Based Compensation

The Amended and Restated Omnibus Stock and Performance Compensation Plan (the “Omnibus Plan”) permits the issuance of up to 1,500,000 shares of the Company's common stock in the form of stock options, stock appreciation rights (“SARs”), restricted stock, restricted stock units and performance awards. The Company issues shares out of treasury stock for these awards. During the three months ended March 31, 2015, 35,657 restricted shares and 0 SARs were granted under the Omnibus Plan.

Restricted Stock
Restricted shares granted prior to April 16, 2013 are amortized to expense over a three-year vesting period. Beginning on April 16, 2013, restricted shares granted to Company employees are amortized to expense over a three-year vesting period whereas restricted shares granted to members of the Board of Directors are amortized to expense over a one-year service period, with the exception of those shares granted in lieu of cash payments for retainer fees which are expensed in the period earned. As of March 31, 2015, the total unrecognized compensation expense related to non-vested restricted shares was $2,578,000, and the related weighted-average period over which it is expected to be recognized is approximately 1.3 years.

Following is a summary of the activity of the restricted stock:

	Three Months Ended
	March 31, 2015
	Shares		Fair Value
Balance at December 31, 2014	51,161		$	48.13
Granted	35,657		$	50.55
Vested	(20,441	)	$	43.97
Balance at March 31, 2015	66,377		$	50.71

SARs
SARs vest over a three-year period, with one-third of the shares vesting and becoming exercisable each year on the anniversary date of the grant, and they expire 10 years from the original grant date. As of March 31, 2015, the total unrecognized compensation expense was $661,000, and the related weighted-average period over which it is expected to be recognized is .8 years. Following is a summary of the activity of the Company's SARs program for the three-month period ended March 31, 2015:

		Weighted-		Average	Aggregate
		Average		Remaining	Intrinsic
		Exercise		Contractual	Value
	Shares	Price		Term Years	*(In thousands)*
Outstanding at December 31, 2014	353,955	$	35.52	6.77	$	6,277
Exercised	(35,511)	$	28.20
Outstanding at March 31, 2015	318,444	$	36.33	6.71	$	6,307
Exercisable at March 31, 2015	264,976	$	33.34	6.37	$	6,043

Following is a summary of the activity of the non-vested SARs during the three-month period ended March 31, 2015:

			Weighted-Average
	Shares		Grant Date Fair Value
Non-vested at December 31, 2014	124,982		$	45.85
Vested	(71,514	)	$	41,87
Non-vested at March 31, 2015	53,468		$	51.19

The Company uses the Black-Scholes pricing model to determine the fair value of the SARs at the date of grant. Following are the assumptions used to estimate the per-share fair value of SARs granted:

	Three Months Ended March 31,
	2015	2014
Risk-free interest rate	N/A	2.38	%
Expected life	N/A	7 yrs.
Expected volatility	N/A	28.11	%
Expected dividend yield	N/A	1.30	%

The risk-free interest rate is based on the zero-coupon U.S. Treasury yield for the period equal to the expected life of the SARs at the time of the grant. The expected life was derived using the historical exercise activity. The Company uses historical volatility for a period equal to the expected life of the rights using average monthly closing market prices of the Company's stock as reported on The Nasdaq Global Market. The expected dividend yield is based on the Company's current rate of annual dividends.

Defined Pension Plans

3 Months Ended

Mar. 31, 2015

Defined Pension Plans [Abstract]

Defined Pension Plans

Note 9 – Defined Pension Plans

The Company has a noncontributory defined-benefit pension plan, which covers most of its employees. The Company accrues and makes contributions designed to fund normal service costs on a current basis using the projected unit credit with service proration method to amortize prior service costs arising from improvements in pension benefits and qualifying service prior to the establishment of the plan over a period of approximately 30 years. Disclosure information is based on a measurement date of December 31 of the corresponding year. The following table represents the components of the net periodic pension costs:

	Estimated		Actual
*(In thousands)*	2015		2014
Service cost – benefits earned during the year	$	3,977	$	3,003
Interest cost on projected benefit obligations		3,217		3,037
Expected return on plan assets		(4,863)		(4,711)
Net amortization		1,605		244
Net periodic pension cost	$	3,936	$	1,573

Pension costs recorded to expense were $991,000 and $410,000 for the three-month periods ended March 31, 2015 and 2014, respectively. Pension costs increased significantly in 2015 due to a decrease in the discount rate assumption and the use of the updated mortality tables. The Company made no contribution to the plan during the three-month period ended March 31, 2015 and is evaluating the amount of additional contributions, if any, in the remainder of 2015.

In addition to the above funded benefit plan, the Company has an unfunded supplemental executive retirement plan which covers key executives of the Company. This is a noncontributory plan in which the Company and its subsidiaries make accruals designed to fund normal service costs on a current basis using the same method and criteria as its defined benefit plan. The following table represents the components of the net periodic pension costs for 2014 and an estimate for 2015:

	Estimated		Actual
*(In thousands)*	2015		2014
Service cost – benefits earned during the year	$	140	$	136
Interest cost on projected benefit obligation		348		377
Net amortization		654		431
Net periodic pension cost	$	1,142	$	944

Pension costs recorded to expense were $285,000 and $236,000 for the three-month periods ended March 31, 2015 and 2014, respectively.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2015
Income Taxes [Abstract]
Income Taxes	Note 10 – Income Taxes As of March 31, 2015, the Company's unrecognized tax benefits were approximately $1,191,000, of which $876,000 would, if recognized, affect the Company's effective tax rate. As of December 31, 2014, the Company's unrecognized tax benefits were approximately $1,117,000, of which $819,000 would, if recognized, affect the Company's effective tax rate. During the next 12 months, the Company may realize a reduction of its unrecognized tax benefits of approximately $210,000 due to the lapse of federal and state statutes of limitations. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. The Company had $54,000 and $45,000 of gross interest accrued as of March 31, 2015 and December 31, 2014, respectively. There were no penalties for unrecognized tax benefits accrued at March 31, 2015 and December 31, 2014. The Company is subject to income tax in the U.S. federal jurisdiction and numerous state jurisdictions. U.S. federal income tax returns for tax years 2011 through 2013 remain subject to examination by the Internal Revenue Service. In addition, the Company is subject to state tax examinations for the tax years 2011 through 2013.

Investment in Securities

3 Months Ended

Mar. 31, 2015

Investment in Securities [Abstract]

Investment in Securities

Note 11 – Investment in Securities

Investment securities available-for-sale are recorded at fair value on a recurring basis. The Company's investment securities available-for-sale are measured at fair value using Level 2 valuations. The market evaluation utilizes several sources which include “observable inputs” rather than “significant unobservable inputs” and therefore fall into the Level 2 category. The amortized cost, gross unrealized gains, gross unrealized losses and fair value of investment securities are summarized as follows:

	March 31, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized
*(In thousands)*	Cost		Gains		Losses		Fair Value
State and political subdivisions	$	304,441	$	14,497	$	61	$	318,877
Certificates of deposit		3,750		—		—		3,750
Total	$	308,191	$	14,497	$	61	$	322,627

	December 31, 2014
			Gross		Gross
	Amortized		Unrealized		Unrealized
*(In thousands)*	Cost		Gains		Losses		Fair Value
State and political subdivisions	$	338,469	$	14,120	$	198	$	352,391
Certificates of deposit		3,750		—		—		3,750
Total	$	342,219	$	14,120	$	198	$	356,141

The fair values of securities with unrealized losses are as follows:

	March 31, 2015
	Less than 12 months				12 months or more				Total
	Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized
*(In thousands)*	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
State and political subdivisions	$	8,354	$	40	$	1,220	$	21	$	9,574	$	61
Certificates of deposit		—		—		—		—		—		—
Total	$	8,354	$	40	$	1,220	$	21	$	9,574	$	61

	December 31, 2014
	Less than 12 months				12 months or more				Total
	Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized
*(In thousands)*	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
State and political subdivisions	$	8,700	$	15	$	13,833	$	183	$	22,533	$	198
Certificates of deposit		—		—		—		—		—		—
Total	$	8,700	$	15	$	13,833	$	183	$	22,533	$	198

There were 8 securities, or 2% of the total (one greater than 12 months), in an unrealized loss position as of March 31, 2015. There were 20 securities, or 6% of the total (12 greater than 12 months), in an unrealized loss position as of December 31, 2014. All unrealized losses were reviewed to determine whether the losses were other than temporary. Management believes that all unrealized losses are temporary since they were market driven, the Company does not have the intent to sell the security, and it is more likely than not that the Company will not be required to sell prior to recovery of the amortized basis.

The amortized cost and fair value of investment securities by contractual maturity are shown in the following table. Expected maturities may differ from contractual maturities because borrowers have the right to prepay obligations with or without prepayment penalties.

	March 31, 2015
*(In thousands)*	Amortized Cost		Fair Value
Due in 1 year or less	$	29,318	$	29,603
Due after 1 year through 5 years		88,584		92,912
Due after 5 years through 10 years		130,196		136,890
Due after 10 years		60,093		63,222
Total	$	308,191	$	322,627

Proceeds from sales of investment securities classified as available for sale were $45,198,000 for the three months ended March 31, 2015. Gross realized gains were $949,000 for the three months ended March 31, 2015. There was one security totaling $3,750,000 pledged to secure public deposits and for other purposes at March 31, 2015.

Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2015

Fair Value of Financial Instruments [Abstract]

Fair Value of Financial Instruments

Note 12 – Fair Value of Financial Instruments

Following is a summary of the carrying amounts and fair values of the Company's financial instruments:

	March 31, 2015				December 31, 2014
	Carrying				Carrying
*(In thousands)*	Amount		Fair Value		Amount		Fair Value
Balance sheet assets:
Cash and cash equivalents	$	208,515	$	208,515	$	294,335	$	294,335
Investment securities		322,627		322,627		356,141		356,141
Loans, net		671,639		679,017		657,452		663,247
Accrued interest receivable		5,117		5,117		6,521		6,521
Total	$	1,207,898	$	1,215,276	$	1,314,449	$	1,320,244
Balance sheet liabilities:
Deposits	$	615,078	$	615,651	$	618,199	$	618,199
Accounts and drafts payable		556,826		556,826		655,428		655,928
Accrued interest payable		66		66		57		57
Total	$	1,171,970	$	1,172,543	$	1,273,684	$	1,274,184

The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Cash and Cash Equivalents - The carrying amount approximates fair value.

Investment in Securities - The fair value is measured on a recurring basis using Level 2 valuations. Refer to Note 11, “Investment in Securities,” for fair value and unrealized gains and losses by investment type.

Loans - The fair value is estimated using present values of future cash flows discounted at risk-adjusted interest rates for each loan category designated by management and is therefore a Level 3 valuation. Management believes that the risk factor embedded in the interest rates along with the allowance for loan losses results in a fair valuation.

Impaired loans are valued using the fair value of the collateral which is based upon an observable market price or a current appraised value and therefore, the fair value is a nonrecurring Level 3 valuation.

Accrued Interest Receivable - The carrying amount approximates fair value.

Deposits - The fair value of demand deposits, savings deposits and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities and therefore, is a Level 2 valuation. The fair value estimates above do not include the benefit that results from the low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market or the benefit derived from the customer relationship inherent in existing deposits.

Accounts and Drafts Payable - The carrying amount approximates fair value.

Accrued Interest - The carrying amount approximates fair value.

There were no transfers between Levels 1 and 2 of the fair value hierarchy for the three months ended March 31, 2015 and 2014. No financial instruments are measured using Level 3 inputs for the three months ended March 31, 2015 and 2014.

Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2015

Intangible Assets [Abstract]

Schedule of Company's Intangible Assets

		March 31, 2015				December 31, 2014
	Gross Carrying		Accumulated			Gross Carrying		Accumulated
*(In thousands)*	Amount		Amortization			Amount		Amortization
Assets eligible for amortization:
Customer lists		3,933		(1,785	)	$	3,933	$	(1,705)
Patent		23		(1	)		23		(1)
Non-compete agreements		261		(170	)		261		(157)
Software		234		(234	)		234		(234)
Other		500		(100	)		500		(92)
Unamortized intangible assets:
Goodwill¹		11,817		(227	)		11,817		(227)
Total intangible assets		16,768		(2,517	)	$	16,768	$	(2,416)

¹	Amortization through December 31, 2001 prior to adoption of FASB ASC 350.

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

	Three Months Ended
	March 31,
*(In thousands except share and per share data)*	2015		2014
Basic
Net income	$	5,539	$	5,811
Weighted-average common shares outstanding		11,440,356		11,478,116
Basic earnings per share	$	.48	$	.51
Diluted
Net income	$	5,539	$	5,811
Weighted-average common shares outstanding		11,440,356		11,478,116
Effect of dilutive restricted stock and stock appreciation rights		161,497		194,707
Weighted-average common shares outstanding assuming dilution		11,601,853		11,672,823
Diluted earnings per share	$	.48	$	.50

Industry Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Industry Segment Information [Abstract]

Summary of Company's Operations in Each Segment

					Corporate,
	Information		Banking		Eliminations
*(In thousands)*	Services		Services		and Other			Total
Quarter Ended March 31, 2015
Fee revenue and other income:
Income from customers	$	24,274	$	5,519	$	—		$	29,793
Intersegment income (expense)		2,194		423		(2,617	)		—
Net income		3,816		1,723		—			5,539
Goodwill		11,454		136		—			11,590
Other intangible assets, net		2,661		—		—			2,661
Total assets		686,492		724,292		(10,036	)		1,400,748
Quarter Ended March 31, 2014
Fee revenue and other income
Income from customers	$	23,215	$	5,507	$	—		$	28,722
Intersegment income (expense)		2,144		354		(2,498	)		—
Net income		4,100		1,711		—			5,811
Goodwill		11,454		136		—			11,590
Other intangible assets, net		3,102		—		—			3,102
Total assets		672,248		679,391		(9,712	)		1,341,927

Loans by Type (Tables)

3 Months Ended

Mar. 31, 2015

Loans by Type [Abstract]

Summary of Loan Categories

	March 31,		December 31,
*(In thousands)*	2015		2014
Commercial and industrial	$	221,645	$	203,350
Real estate
Commercial:
Mortgage		111,709		117,754
Construction		—		—
Church, church-related:
Mortgage		311,100		305,887
Construction		16,424		18,612
Industrial Revenue Bonds		22,582		23,348
Other		77		395
Total loans	$	683,537	$	669,346

Schedule of the Aging Loans by Loan Categories

	Performing						Nonperforming
								90 Days
				30-59		60-89		and		Non-	Total
*(In thousands)*	Current		Days		Days		Over		accrual		Loans
March 31, 2015
Commercial and industrial	$	221,557	$	—	$	—	$	—	$	88	$	221,645
Real estate
Commercial:
Mortgage		108,632		—		—		—		3,077		111,709
Construction		—		—		—		—		—		—
Church, church-related:
Mortgage		310,979		—		—		—		121		311,100
Construction		16,424		—		—		—		—		16,424
Industrial Revenue Bonds		22,582		—		—		—		—		22,582
Other		77		—		—		—		—		77
Total	$	680,251	$	—	$	—	$	—	$	3,286	$	683,537
December 31, 2014
Commercial and industrial	$	203,350	$	—	$	—	$	—	$	—	$	203,350
Real estate
Commercial:
Mortgage		117,393		—		—		—		361		117,754
Construction		—		—		—		—		—		—
Church, church-related:
Mortgage		305,760		—		—		—		127		305,887
Construction		18,612		—		—		—		—		18,612
Industrial Revenue Bonds		23,348		—		—		—		—		23,348
Other		395		—		—		—		—		395
Total	$	668,858	$	—	$	—	$	—	$	488	$	669,346

Schedule of Credit Exposure of the Loan Portfolio

	Loans		Performing		Nonperforming
	Subject to		Loans Subject to		Loans Subject
	Normal		Special		to Special
*(In thousands)*	Monitoring¹		Monitoring²		Monitoring²		Total Loans
March 31, 2015
Commercial and industrial	$	217,740	$	3,817	$	88	$	221,645
Real estate
Commercial:
Mortgage		97,709		10,923		3,077		111,709
Construction		—		—		—		—
Church, church-related:
Mortgage		309,527		1,452		121		311,100
Construction		16,424		—		—		16,424
Industrial Revenue Bonds		22,582		—		—		22,582
Other		77		—		—		77
Total	$	664,059	$	16,192	$	3,286	$	683,537
December 31, 2014
Commercial and industrial	$	199,837	$	3,513	$	—	$	203,350
Real estate
Commercial:
Mortgage		103,097		14,296		361		117,754
Construction		—		—		—		—
Church, church-related:
Mortgage		304,219		1,541		127		305,887
Construction		18,612		—		—		18,612
Industrial Revenue Bonds		23,348		—		—		23,348
Other		395		—		—		395
Total	$	649,508	$	19,350	$	488	$	669,346

¹	Loans subject to normal monitoring involve borrowers of acceptable-to-strong credit quality and risk, who have the apparent ability to satisfy their loan obligations.

²	Loans subject to special monitoring possess some credit deficiency or potential weakness which requires a high level of management attention.

Schedule of Recorded Investment and Unpaid Principal Balance for Impaired Loans

			Unpaid		Related
	Recorded		Principal		Allowance for
*(In thousands)*	Investment		Balance		Loan Losses
March 31, 2015
Commercial and industrial:
Nonaccrual	$	88	$	88	$	—
Real estate
Commercial – Mortgage:
Nonaccrual		3,077		3,077		1,127
Church – Mortgage:
Nonaccrual		121		121		121
Total impaired loans	$	3,286	$	3,286	$	1,248
December 31, 2014
Commercial and industrial:
Nonaccrual	$	—	$	—	$	—
Real estate
Commercial – Mortgage:
Nonaccrual		361		361		—
Church – Mortgage:
Nonaccrual		127		127		127
Total impaired loans	$	488	$	488	$	127

Summary of the Allowance for Loan Losses

	December 31,		Charge-							March 31,
*(In thousands)*	2014		Offs		Recoveries		Provision			2015
Commercial and industrial	$	3,515	$	—	$	3	$	323		$	3,841
Real estate
Commercial:
Mortgage		3,060		—		—		(152	)		2,908
Construction		—		—		—		—			—
Church, church-related:
Mortgage		4,016		—		1		56			4,073
Construction		140		—		—		(17	)		123
Industrial Revenue Bond		394		—		—		(13	)		381
Other		769		—		—		(197	)		572
Total	$	11,894	$	—	$	4	$	—		$	11,898

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Stock-Based Compensation [Abstract]

Summary of Restricted Stock Activity

	Three Months Ended
	March 31, 2015
	Shares		Fair Value
Balance at December 31, 2014	51,161		$	48.13
Granted	35,657		$	50.55
Vested	(20,441	)	$	43.97
Balance at March 31, 2015	66,377		$	50.71

Summary of SARs Activity

		Weighted-		Average	Aggregate
		Average		Remaining	Intrinsic
		Exercise		Contractual	Value
	Shares	Price		Term Years	*(In thousands)*
Outstanding at December 31, 2014	353,955	$	35.52	6.77	$	6,277
Exercised	(35,511)	$	28.20
Outstanding at March 31, 2015	318,444	$	36.33	6.71	$	6,307
Exercisable at March 31, 2015	264,976	$	33.34	6.37	$	6,043

Summary of Non-vested SARs Activity

			Weighted-Average
	Shares		Grant Date Fair Value
Non-vested at December 31, 2014	124,982		$	45.85
Vested	(71,514	)	$	41,87
Non-vested at March 31, 2015	53,468		$	51.19

Schedule of Assumptions used in SARs Granted

	Three Months Ended March 31,
	2015	2014
Risk-free interest rate	N/A	2.38	%
Expected life	N/A	7 yrs.
Expected volatility	N/A	28.11	%
Expected dividend yield	N/A	1.30	%

Defined Pension Plans (Tables)

3 Months Ended

Mar. 31, 2015

Defined Pension Plans [Abstract]

Schedule of Net Periodic Pension Costs

	Estimated		Actual
*(In thousands)*	2015		2014
Service cost – benefits earned during the year	$	3,977	$	3,003
Interest cost on projected benefit obligations		3,217		3,037
Expected return on plan assets		(4,863)		(4,711)
Net amortization		1,605		244
Net periodic pension cost	$	3,936	$	1,573

Schedule of Unfunded Supplemental Executive Retirement Plan

	Estimated		Actual
*(In thousands)*	2015		2014
Service cost – benefits earned during the year	$	140	$	136
Interest cost on projected benefit obligation		348		377
Net amortization		654		431
Net periodic pension cost	$	1,142	$	944

Investment in Securities (Tables)

3 Months Ended

Mar. 31, 2015

Investment in Securities [Abstract]

Schedule of Investment Securities

	March 31, 2015
			Gross		Gross
	Amortized		Unrealized		Unrealized
*(In thousands)*	Cost		Gains		Losses		Fair Value
State and political subdivisions	$	304,441	$	14,497	$	61	$	318,877
Certificates of deposit		3,750		—		—		3,750
Total	$	308,191	$	14,497	$	61	$	322,627

	December 31, 2014
			Gross		Gross
	Amortized		Unrealized		Unrealized
*(In thousands)*	Cost		Gains		Losses		Fair Value
State and political subdivisions	$	338,469	$	14,120	$	198	$	352,391
Certificates of deposit		3,750		—		—		3,750
Total	$	342,219	$	14,120	$	198	$	356,141

Schedule of the Fair Value of Securities with Unrealized Losses

	March 31, 2015
	Less than 12 months				12 months or more				Total
	Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized
*(In thousands)*	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
State and political subdivisions	$	8,354	$	40	$	1,220	$	21	$	9,574	$	61
Certificates of deposit		—		—		—		—		—		—
Total	$	8,354	$	40	$	1,220	$	21	$	9,574	$	61

	December 31, 2014
	Less than 12 months				12 months or more				Total
	Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized
*(In thousands)*	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
State and political subdivisions	$	8,700	$	15	$	13,833	$	183	$	22,533	$	198
Certificates of deposit		—		—		—		—		—		—
Total	$	8,700	$	15	$	13,833	$	183	$	22,533	$	198

Schedule of Amortized Cost and Fair Value of Investment

	March 31, 2015
*(In thousands)*	Amortized Cost		Fair Value
Due in 1 year or less	$	29,318	$	29,603
Due after 1 year through 5 years		88,584		92,912
Due after 5 years through 10 years		130,196		136,890
Due after 10 years		60,093		63,222
Total	$	308,191	$	322,627

Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value of Financial Instruments [Abstract]

Summary of the Fair Value of Financial Instruments

	March 31, 2015				December 31, 2014
	Carrying				Carrying
*(In thousands)*	Amount		Fair Value		Amount		Fair Value
Balance sheet assets:
Cash and cash equivalents	$	208,515	$	208,515	$	294,335	$	294,335
Investment securities		322,627		322,627		356,141		356,141
Loans, net		671,639		679,017		657,452		663,247
Accrued interest receivable		5,117		5,117		6,521		6,521
Total	$	1,207,898	$	1,215,276	$	1,314,449	$	1,320,244
Balance sheet liabilities:
Deposits	$	615,078	$	615,651	$	618,199	$	618,199
Accounts and drafts payable		556,826		556,826		655,428		655,928
Accrued interest payable		66		66		57		57
Total	$	1,171,970	$	1,172,543	$	1,273,684	$	1,274,184

Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended
Intangible Assets (Narrative) (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 101,000	$ 120,000
2015	405,000
2016	405,000
2017	353,000
2018	353,000
2019	$ 353,000
Customer Lists [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	10 years
Customer Lists [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	7 years
Patent [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	18 years
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	5 years
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	3 years
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	15 years

Intangible Assets (Schedule of Company's Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified

Mar. 31, 2015

Dec. 31, 2014

Unamortized intangible assets:

Goodwill, Gross Carrying Amount

$ 11,817

^[1]

$ 11,817

^[1]

Goodwill, Accumulated Amortization

(227)

^[1]

(227)

^[1]

Total intangible assets

16,768

Accumulated Amortization

(2,517)

(2,416)

Customer Lists [Member]

Assets eligible for amortization:

Gross Carrying Amount

3,933

Accumulated Amortization

(1,785)

(1,705)

Patents [Member]

Assets eligible for amortization:

Gross Carrying Amount

Accumulated Amortization

(1)

Non-compete Agreements [Member]

Assets eligible for amortization:

Gross Carrying Amount

261

Accumulated Amortization

(170)

(157)

Software [Member]

Assets eligible for amortization:

Gross Carrying Amount

234

Accumulated Amortization

(234)

Other [Member]

Assets eligible for amortization:

Gross Carrying Amount

500

Accumulated Amortization

$ (100)

$ 92

[1]	Amortization through December 31, 2001 prior to adoption of FASB ASC 350.

Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Basic
Net income	$ 5,539	$ 5,811
Weighted-average common shares outstanding	11,440,356	11,478,116
Basic earnings per share	$ 0.48	$ 0.51
Diluted
Net Income	$ 5,539	$ 5,811
Weighted-average common shares outstanding	11,440,356	11,478,116
Effect of dilutive restricted stock, stock options and stock appreciation rights	161,497	194,707
Weighted-average common shares outstanding assuming dilution	11,601,853	11,672,823
Diluted earnings per share	$ 0.48	$ 0.50

Stock Repurchases (Details)	3 Months Ended
Stock Repurchases (Details)	Mar. 31, 2015	Mar. 31, 2014
Stock Repurchases [Abstract]
Number of shares authorized to be repurchased	500,000
Shares repurchased	69,288	0
Remaining number of shares available for repurchase	410,752

Industry Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fee revenue and other income:
Income from customers	$ 29,793	$ 28,722
Intersegment income (expense)
Net income	5,539	5,811
Goodwill	11,590	11,590	11,590
Other intangible assets, net	2,661	3,102
Total assets	1,400,748	1,341,927	1,500,731
Information Services [Member]
Fee revenue and other income:
Income from customers	24,274	23,215
Intersegment income (expense)	2,194	2,144
Net income	3,816	4,100
Goodwill	11,454	11,454
Other intangible assets, net	2,661	3,102
Total assets	686,492	672,248
Banking Services [Member]
Fee revenue and other income:
Income from customers	5,519	5,507
Intersegment income (expense)	423	354
Net income	1,723	1,711
Goodwill	136	136
Other intangible assets, net
Total assets	724,292	679,391
Corporate Eliminations and Other [Member]
Fee revenue and other income:
Income from customers
Intersegment income (expense)	(2,617)	(2,498)
Net income
Goodwill
Other intangible assets, net
Total assets	$ (10,036)	$ (9,712)

Loans by Type (Summary of Loan Categories) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Participating Mortgage Loans [Line Items]
Loans	$ 683,537	$ 669,346
Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Loans	221,645	203,350
Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Loans	111,709	117,754
Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Loans
Real Estate Church Related Mortgage [Member]
Participating Mortgage Loans [Line Items]
Loans	311,100	305,887
Real Estate Church Related Construction [Member]
Participating Mortgage Loans [Line Items]
Loans	16,424	18,612
Industrial Revenue Bonds [Member]
Participating Mortgage Loans [Line Items]
Loans	22,582	23,348
Other Loan [Member]
Participating Mortgage Loans [Line Items]
Loans	$ 77	$ 395

Loans by Type (Schedule of the Aging of Loans by Loan Categories) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Participating Mortgage Loans [Line Items]
Current	$ 680,251	$ 668,858
30-59 Days
60-89 Days
90 Days and over
Nonaccrual	3,286	488
Loans	683,537	669,346
Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Current	221,557	203,350
30-59 Days
60-89 Days
90 Days and over
Nonaccrual	88
Loans	221,645	203,350
Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Current	108,632	117,393
30-59 Days
60-89 Days
90 Days and over
Nonaccrual	3,077	361
Loans	111,709	117,754
Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Current
30-59 Days
60-89 Days
90 Days and over
Nonaccrual
Loans
Real Estate Church Related Mortgage [Member]
Participating Mortgage Loans [Line Items]
Current	310,979	305,760
30-59 Days
60-89 Days
90 Days and over
Nonaccrual	121	127
Loans	311,100	305,887
Real Estate Church Related Construction [Member]
Participating Mortgage Loans [Line Items]
Current	16,424	18,612
30-59 Days
60-89 Days
90 Days and over
Nonaccrual
Loans	16,424	18,612
Industrial Revenue Bonds [Member]
Participating Mortgage Loans [Line Items]
Current	22,582	23,348
30-59 Days
60-89 Days
90 Days and over
Nonaccrual
Loans	22,582	23,348
Other [Member]
Participating Mortgage Loans [Line Items]
Current	77	395
30-59 Days
60-89 Days
90 Days and over
Nonaccrual
Loans	$ 77	$ 395

Loans by Type (Schedule of the Credit Exposure of the Loan Portfolio) (Details) (USD $)
In Thousands, unless otherwise specified

Mar. 31, 2015

Dec. 31, 2014

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Note 13 – Subsequent Events In accordance with FASB ASC 855, “Subsequent Events,” the Company has evaluated subsequent events after the consolidated balance sheet date of March 31, 2015, and there were no events identified that would require additional disclosures to prevent the Company's unaudited consolidated financial statements from being misleading.

Loans by Type (Schedule of Recorded Investment and Unpaid Principal for Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Participating Mortgage Loans [Line Items]
Nonaccrual	$ 3,286	$ 488
Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	3,286	488
Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	3,286	488
Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	1,248	127
Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	88
Commercial and Industrial [Member] \| Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	88
Commercial and Industrial [Member] \| Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	88
Commercial and Industrial [Member] \| Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	3,077	361
Real Estate Commercial Mortgage [Member] \| Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	3,077	361
Real Estate Commercial Mortgage [Member] \| Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	3,077	361
Real Estate Commercial Mortgage [Member] \| Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	1,127
Real Estate Church Related Mortgage [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	121	127
Real Estate Church Related Mortgage [Member] \| Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	121	127
Real Estate Church Related Mortgage [Member] \| Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	121	127
Real Estate Church Related Mortgage [Member] \| Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	$ 121	$ 127

Loans by Type (Summary of Allowance for Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Participating Mortgage Loans [Line Items]
Beginning Balance	$ 11,894
Charge-Offs
Recoveries	4
Provision
Ending Balance	11,898
Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance	3,515
Charge-Offs
Recoveries	3
Provision	323
Ending Balance	3,841
Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance	3,060
Charge-Offs
Recoveries
Provision	(152)
Ending Balance	2,908
Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance
Charge-Offs
Recoveries
Provision
Ending Balance
Real Estate Church Related Mortgage [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance	4,016
Charge-Offs
Recoveries	1
Provision	56
Ending Balance	4,073
Real Estate Church Related Construction [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance	140
Charge-Offs
Recoveries
Provision	(17)
Ending Balance	123
Industrial Revenue Bond [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance	394
Charge-Offs
Recoveries
Provision	(13)
Ending Balance	381
Other [Member]
Participating Mortgage Loans [Line Items]
Beginning Balance	769
Charge-Offs
Recoveries
Provision	(197)
Ending Balance	$ 572

Commitments and Contingencies (Narrative) (Details) (USD $)	Mar. 31, 2015
Commitments and Contingencies [Abstract]
Unused loan commitments	$ 12,917,000
Standby letters of credit	11,754,000
Commercial letters of credit	$ 2,017,000

Commitments and Contingencies (Summary of Company's Contractual Cash Obligations) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Commitments and Contingencies [Abstract]
Operating lease commitments, Total	$ 7,161
Operating lease commitments, Less than 1 Year	1,343
Operating lease commitments, 1 to 3 Years	2,409
Operating lease commitments, 3 to 5 Years	1,545
Operating lease commitments, Over 5 Years	1,864
Time Deposits, Total	75,712
Time Deposits, Less than 1 Year	60,779
Time Deposits, 1 to 3 Years	13,486
Time Deposits, 3 to 5 Years	1,447
Time Deposits, over 5 Years
Commitments, Total	82,873
Commitments, Less than 1 Year	62,122
Commitments, 1 to 3 Years	15,895
Commitments, 3 to 5 Years	2,992
Commitments, Over 5 Years	$ 1,864

Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended
Stock-Based Compensation (Narrative) (Details) (USD $)	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Incentive Plan, shares authorized	1,500,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 2,578,000
Remaining vesting period	1 year 3 months 18 days
Vesting period	3 years
Granted, Shares	35,657
SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 661,000
Remaining vesting period	9 months 18 days
Vesting period	3 years
Granted, Shares	0

Defined Pension Plans (Narrative) (Details) (USD $)	3 Months Ended
Defined Pension Plans (Narrative) (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Pension period	30 years
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension costs	$ 991,000	$ 410,000
Unfunded Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension costs	$ 285,000	$ 236,000

Income Taxes (Details) (USD $)	3 Months Ended
Income Taxes (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014
Income Taxes [Line Items]
Amounts of tax benefits that would affect effective tax rate if recognized	$ 876,000	$ 819,000
Income tax accrued interest	54,000	45,000
Unrecognized tax benefits	1,191,000	1,117,000
Statute of limitations	$ 210,000

Investment in Securities (Narrative) (Details) (USD $)	3 Months Ended
Investment in Securities (Narrative) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Investment in Securities [Abstract]
Number of securities that had an unrealized loss	8	20
Percentage of total securities	2.00%	6.00%
Proceeds from sales of securities available-for-sale	$ 45,198,000
Gross realized gains	949,000
Securities pledged as collateral	$ 3,750,000

Investment in Securities (Schedule of Investement Securities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Investment [Line Items]
Amortized Cost	$ 308,191	$ 342,219
Gross Unrealized Losses	14,497	14,120
Gross Unrealized Gains	61	198
Fair Value	322,627	356,141
State and Political Subdivisions [Member]
Investment [Line Items]
Amortized Cost	304,441	338,469
Gross Unrealized Losses	14,497	14,120
Gross Unrealized Gains	61	198
Fair Value	318,877	352,391
Certificates Of deposit [Member]
Investment [Line Items]
Amortized Cost	3,750	3,750
Gross Unrealized Losses
Gross Unrealized Gains
Fair Value	$ 3,750	$ 3,750

Investment in Securities (Schedule of Amortized Cost and Fair Value of Investment Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Investment in Securities [Abstract]
Amortized Cost, Due in 1 year or less	$ 29,318
Amortized Cost, Due after 1 year through 5 years	88,584
Amortized Cost, Due after 5 years through 10 years	130,196
Amortized Cost, Due after 10 years	60,093
Amortized Cost, Total	308,191
Fair Value, Due in 1 year or less	29,603
Fair Value, Due after 1 year through 5 years	92,912
Fair Value, Due after 5 years through 10 years	136,890
Fair Value, Due after 10 years	63,222
Fair Value, Total	$ 322,627	$ 356,141

Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Cash and cash equivalents, Carrying Amount	$ 208,515	$ 294,335	$ 199,161	$ 225,262
Investment securities, Carrying Amount	322,627	356,141
Loans, net, Carrying Amount	671,639	657,452
Accrued interest receivable, Carrying Amount	5,117	6,521
Assets, Carrying Amount	1,207,898	1,314,449
Cash and cash equivalents, Fair Value	208,515	294,335
Investment securities, Fair Value	322,627	356,141
Loans, net, Fair Value	679,017	663,247
Accrued interest receivable, Fair Value	5,117	6,521
Assets, Fair Value	1,215,276	1,320,244
Deposits	615,078	618,199
Accounts and drafts payable	556,826	655,428
Accrued interest payable, Carrying Amount	66	57
Liabilities, Carrying Amount	1,171,970	1,273,684
Deposits, Fair Value	615,651	618,199
Accounts and drafts payable, Fair Value	556,826	655,928
Accrued interest payable, Fair Value	66	57
Liabilities, Fair Value	$ 1,172,543	$ 1,274,184