Wilson Bank Holding (WBHC) 10-Q8 May 152015 Q1 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2015	8-May-15
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	WBHC
Entity Registrant Name	WILSON BANK HOLDING CO
Entity Central Index Key	885275
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		7,609,877

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Loans	$1,378,279	$1,352,437
Less: Allowance for loan losses	-22,498	-22,572
Net loans	1,355,781	1,329,865
Securities:
Held to maturity, at cost (market value $28,389 and $28,400, respectively)	28,154	28,123
Available-for-sale, at market (amortized cost $335,801 and $347,520, respectively)	336,611	346,420
Total securities	364,765	374,543
Loans held for sale	11,983	9,466
Restricted equity securities	3,012	3,012
Federal funds sold	20,005	16,005
Total earning assets	1,755,546	1,732,891
Cash and due from banks	74,507	52,002
Bank premises and equipment, net	40,350	40,123
Accrued interest receivable	5,685	5,463
Deferred income tax asset	8,470	9,171
Other real estate	7,033	7,298
Bank owned life insurance and annuity contracts	25,125	17,331
Other assets	3,875	4,158
Goodwill	4,805	4,805
Total assets	1,925,396	1,873,242
Liabilities and Stockholders' Equity
Deposits	1,702,335	1,660,270
Securities sold under repurchase agreements	2,619	3,437
Accrued interest and other liabilities	13,276	8,643
Total liabilities	1,718,230	1,672,350
Stockholders' equity:
Common stock, $2.00 par value; authorized 15,000,000 shares, issued 7,609,877 and 7,571,968 shares, respectively	15,220	15,144
Additional paid-in capital	59,384	57,709
Retained earnings	132,062	128,718
Net unrealized gains (losses) on available-for-sale securities, net of income taxes of $310 and $421 respectively	500	-679
Total stockholders' equity	207,166	200,892
Total liabilities and stockholders' equity	$1,925,396	$1,873,242

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Held-to-maturity, market value	$28,389	$28,400
Available-for-sale, amortized cost	335,801	347,520
Common stock, par value	$2	$2
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	7,609,877	7,571,968
Net unrealized gains (losses) on available-for-sale securities, income taxes	$310	$421

Consolidated_Statements_of_Ear

Consolidated Statements of Earnings (Unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest income:
Interest and fees on loans	$17,108	$16,043
Interest and dividends on securities:
Taxable securities	1,611	1,600
Exempt from Federal income taxes	171	164
Interest on loans held for sale	70	51
Interest on Federal funds sold	37	46
Interest and dividends on restricted securities	30	30
Total interest income	19,027	17,934
Interest expense:
Interest on negotiable order of withdrawal accounts	366	391
Interest on money market and savings accounts	505	600
Interest on certificates of deposit	1,343	1,508
Interest on securities sold under repurchase agreements	2	9
Total interest expense	2,216	2,508
Net interest income before provision for loan losses	16,811	15,426
Provision for loan losses	75	249
Net interest income after provision for loan losses	16,736	15,177
Non-interest income:
Service charges on deposit accounts	1,099	916
Other fees and commissions	2,541	1,947
Gain on sale of other real estate	18
Gain on sale of loans	863	501
Total non-interest income	4,521	3,364
Non-interest expense:
Salaries and employee benefits	7,252	6,707
Occupancy expenses, net	766	696
Furniture and equipment expense	498	406
Data processing expense	531	578
Directors' fees	176	182
Other operating expenses	2,879	2,884
Write downs and loss on sale of other real estate, net		160
Loss on sale of other assets	1	4
Total non-interest expense	12,103	11,617
Earnings before income taxes	9,154	6,924
Income taxes	3,538	2,752
Net earnings	$5,616	$4,172
Weighted average number of shares outstanding-basic	7,597,396	7,522,280
Weighted average number of shares outstanding-diluted	7,600,781	7,526,636
Basic earnings per common share	$0.74	$0.55
Diluted earnings per common share	$0.74	$0.55
Dividends per share	$0.30	$0.30

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Earnings (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$5,616	$4,172
Other comprehensive earnings, net of tax:
Unrealized gains on available-for-sale securities arising during period, net of income taxes of $731 and $735, respectively	1,179	1,185
Other comprehensive earnings	1,179	1,185
Comprehensive earnings	$6,795	$5,357

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Earnings (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities arising during period, net of income taxes	$731	$735

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Interest received	$19,278	$18,161
Fees and commissions received	3,640	2,863
Proceeds from sale of loans held for sale	33,204	19,670
Origination of loans held for sale	-34,858	-18,462
Interest paid	-2,391	-2,757
Cash paid to suppliers and employees	-9,669	-9,226
Income taxes paid	-683	-784
Net cash provided by operating activities	8,521	9,465
Cash flows from investing activities:
Proceeds from maturities, calls, and principal payments of held-to-maturity securities	158	152
Proceeds from maturities, calls, and principal payments of available-for-sale securities	14,359	21,278
Purchase of held-to-maturity securities	-249	-2,665
Purchase of available-for-sale securities	-3,053	-48,026
Loans made to customers, net of repayments	-26,096	-8,675
Purchase of Bank owned life insurance	-7,402	-5,000
Purchase of premises and equipment	-844	-1,426
Proceeds from sale of other real estate	388	1,521
Proceeds from sale of other assets	10
Net cash used in investing activities	-22,729	-42,841
Cash flows from financing activities:
Net increase in non-interest bearing, savings and NOW deposit accounts	49,385	53,089
Net decrease in time deposits	-7,320	-6,130
Net decrease in securities sold under repurchase agreements	-818	-2,461
Dividends paid	-2,272	-2,250
Proceeds from sale of common stock pursuant to dividend reinvestment	1,603	1,607
Repurchase of common stock		-94
Proceeds from exercise of stock options	135	81
Net cash provided by financing activities	40,713	43,842
Net increase in cash and cash equivalents	26,505	10,466
Cash and cash equivalents at beginning of period	68,007	111,504
Cash and cash equivalents at end of period	94,512	121,970
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	5,616	4,172
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation, amortization, and accretion	1,090	1,026
Provision for loan losses	75	249
(Gain) loss on sale of other real estate	-18
(Gain) loss on sale of other real estate		160
Loss on sale of other assets	1	4
Stock option compensation	13	13
Increase in taxes payable	2,885	2,609
(Increase) decrease in loans held for sale	-2,517	707
Increase in deferred tax assets	-30	-641
(Increase) decrease in other assets, net	-120	216
Increase in interest receivable	-222	-295
Increase in other liabilities	1,923	1,494
Decrease in interest payable	-175	-249
Total adjustments	2,905	5,293
Net cash provided by operating activities	8,521	9,465
Supplemental schedule of non-cash activities:
Unrealized gain in values of securities available-for-sale, net of taxes of $731 and $735 for the three months ended March 31, 2015 and 2014, respectively	1,179	1,185
Non-cash transfers from loans to other real estate	105	388
Non-cash transfers from other real estate to loans		54
Non-cash transfers from loans to other assets	$0	$0

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Cash Flows [Abstract]
Unrealized loss in values of securities available-for-sale, net of taxes	$731	$735

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1. Summary of Significant Accounting Policies

	Nature of Business — Wilson Bank Holding Company (the “Company”) is a bank holding company whose primary business is conducted by its wholly-owned subsidiary, Wilson Bank & Trust (the “Bank”). The Bank is a commercial bank headquartered in Lebanon, Tennessee. The Bank provides a full range of banking services in its primary market areas of Wilson, Davidson, Rutherford, Trousdale, Sumner, Dekalb, Smith, and Putnam Counties, Tennessee.

	Basis of Presentation — The accompanying unaudited, consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and related notes appearing in the 2014 Annual Report previously filed on Form 10-K.

	These consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. Significant intercompany transactions and accounts are eliminated in consolidation.

	Use of Estimates — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include the determination of the allowance for loan losses, the valuation of deferred tax assets, determination of any impairment of intangibles, other-than-temporary impairment of securities, the valuation of other real estate, and the fair value of financial instruments. These financial statements should be read in conjunction with Wilson Bank Holding Company’s Annual Report on Form 10-K for the year ended December 31, 2014. There have been no significant changes to Wilson Bank Holding Company’s significant accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

	Loans — Loans are reported at their outstanding principal balances less unearned income, the allowance for loan losses and any deferred fees or costs on originated loans. Interest income on loans is accrued based on the principal balance outstanding. Loan origination fees, net of certain loan origination costs, are deferred and recognized as an adjustment to the related loan yield using a method which approximates the interest method.

	Loans are charged off when management believes that the full collectability of the loan is unlikely. As such, a loan may be partially charged-off after a “confirming event” has occurred which serves to validate that full repayment pursuant to the terms of the loan is unlikely.

	Loans are placed on nonaccrual status when there is a significant deterioration in the financial condition of the borrower, which often is determined when the principal or interest is more than 90 days past due, unless the loan is both well-secured and in the process of collection. Generally, all interest accrued but not collected for loans that are placed on nonaccrual status, is reversed against current income. Interest income is subsequently recognized only to the extent cash payments are received while the loan is classified as nonaccrual, but interest income recognition is reviewed on a case-by-case basis. A nonaccrual loan is returned to accruing status once the loan has been brought current and collection is reasonably assured or the loan has been “well-secured” through other techniques. Past due status is determined based on the contractual due date per the underlying loan agreement.



	All loans that are placed on nonaccrual are further analyzed to determine if they should be classified as impaired loans. At December 31, 2014 and at March 31, 2015, there were no loans classified as nonaccrual that were not also deemed to be impaired except for those loans not individually evaluated for impairment as described below. A loan is considered to be impaired when it is probable the Company will be unable to collect all principal and interest payments due in accordance with the contractual terms of the loan. This determination is made using a variety of techniques, which include a review of the borrower’s financial condition, debt-service coverage ratios, global cash flow analysis, guarantor support, other loan file information, meetings with borrowers, inspection or reappraisal of collateral and/or consultation with legal counsel as well as results of reviews of other similar industry credits (e.g. builder loans, development loans, church loans, etc). Generally, loans with an identified weakness and principal balance of $100,000 or more are subject to individual identification for impairment. During the first quarter of 2015, the Company increased the level of individual impairment on loans to $500,000, as the Company continues to see improvements in all areas of the business. Individually identified impaired loans are measured based on the present value of expected payments using the loan’s original effective rate as the discount rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. If the recorded investment in the impaired loan exceeds the measure of fair value, a specific valuation allowance is established as a component of the allowance for loan losses or, in the case of collateral dependent loans, the excess is charged off. Changes to the valuation allowance are recorded as a component of the provision for loan losses. Any subsequent adjustments to present value calculations for impaired loan valuations as a result of the passage of time, such as changes in the anticipated payback period for repayment, are recorded as a component of the provision for loan losses. For loans less than $500,000, the Company assigns a valuation allowance to these loans utilizing an allocation rate equal to the allocation rate calculated for loans of a similar type greater than $500,000.

	Allowance for Loan Losses — The allowance for loan losses is maintained at a level that management believes to be adequate to absorb probable losses in the loan portfolio. Loan losses are charged against the allowance when they are known. Subsequent recoveries are credited to the allowance. Management’s determination of the adequacy of the allowance is based on an evaluation of the portfolio, current economic conditions, volume, growth, composition of the loan portfolio, homogeneous pools of loans, risk ratings of specific loans, historical loan loss factors, loss experience of various loan segments, identified impaired loans and other factors related to the portfolio. This evaluation is performed quarterly and is inherently subjective, as it requires material estimates that are susceptible to significant change including the amounts and timing of future cash flows expected to be received on any impaired loans.

	In assessing the adequacy of the allowance, we also consider the results of our ongoing independent loan review process. We undertake this process both to ascertain whether there are loans in the portfolio whose credit quality has weakened over time and to assist in our overall evaluation of the risk characteristics of the entire loan portfolio. Our loan review process includes the judgment of management, independent loan reviewers, and reviews that may have been conducted by third-party reviewers. We incorporate relevant loan review results in the loan impairment determination. In addition, regulatory agencies, as an integral part of their examination process, will periodically review the Company’s allowance for loan losses, and may require the Company to record adjustments to the allowance based on their judgment about information available to them at the time of their examinations.

	Recently Adopted Accounting Pronouncements

	In January 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-04, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure, to reduce the diversity in reporting when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. The amendments in this ASU clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The Company adopted this ASU in the first quarter of 2014 using the prospective method and had no loans that met the above stated criteria as of March 31, 2015.

	Other than the one disclosed above, there were no recently issued accounting pronouncements that are expected to materially impact the Company.

Loans_and_Allowance_for_Loan_L

Loans and Allowance for Loan Losses	3 Months Ended
Loans and Allowance for Loan Losses	Mar. 31, 2015
Receivables [Abstract]
Loans and Allowance for Loan Losses	Note 2. Loans and Allowance for Loan Losses

	For financial reporting purposes, the Company classifies its loan portfolio based on the underlying collateral utilized to secure each loan. This classification is consistent with those utilized in the Quarterly Report of Condition and Income filed by the Bank with the Federal Deposit Insurance Corporation (“FDIC”).

	The following schedule details the loans of the Company at March 31, 2015 and December 31, 2014:



			(In Thousands)
			March 31,				December 31,
			2015				2014
	Mortgage Loans on real estate
	Residential 1-4 family		$	352,539			$	350,758
	Multifamily			40,546				31,242
	Commercial			564,943				564,965
	Construction			257,936				245,830
	Farmland			30,879				30,236
	Second mortgages			8,868				9,026
	Equity lines of credit			43,728				41,496

	Total mortgage loans on real estate			1,299,439				1,273,553

	Commercial loans			30,357				30,000

	Agricultural loans			1,559				1,670

	Consumer installment loans
	Personal			37,825				37,745
	Credit cards			2,987				3,280

	Total consumer installment loans			40,812				41,025

	Other loans			10,615				10,530

				1,382,782				1,356,778

	Net deferred loan fees			(4,503	)			(4,341	)

	Total loans			1,378,279				1,352,437

	Less: Allowance for loan losses			(22,498	)			(22,572	)

	Net Loans		$	1,355,781			$	1,329,865


	The adequacy of the allowance for loan losses is assessed at the end of each calendar quarter. The level of the allowance is based upon evaluation of the loan portfolio, past loan loss experience, current asset quality trends, known and inherent risks in the portfolio, adverse situations that may affect the borrowers’ ability to repay (including the timing of future payment), the estimated value of any underlying collateral, composition of the loan portfolio, economic conditions, historical loss experience, industry and peer bank loan quality indications and other pertinent factors, including regulatory recommendations.



	Transactions in the allowance for loan losses for the three months ended March 31, 2015 and year ended December 31, 2014 are summarized as follows:



			Residential				Multifamily				Commercial				Construction			Farmland				Second				Equity Lines			Commercial			Agricultural,				Total
			1-4 Family								Real Estate											Mortgages				of Credit						Installment
																																and Other
	March 31, 2015
	Allowance for loan losses:
	Beginning balance		$	5,582				172				9,578				5,578			795				61				304			176			326				22,572
	Provision			29				51				(935	)			730			(85	)			52				35			76			122				75
	Charge-offs			(64	)			—				—				—			—				(20	)			—			—			(170	)			(254	)
	Recoveries			14				—				1				7			—				—				—			4			79				105

	Ending balance		$	5,561				223				8,644				6,315			710				93				339			256			357				22,498

Ending balance individually evaluated for impairment		$	243				—				1,110				—			52				—				—			—			—				1,405

Ending balance collectively evaluated for impairment		$	5,318				223				7,534				6,315			658				93				339			256			357				21,093

Ending balance loans acquired with deteriorated credit quality		$	—				—				—				—			—				—				—			—			—				—

Loans:
Ending balance		$	352,539				40,546				564,943				257,936			30,879				8,868				43,728			30,357			52,986				1,382,782

Ending balance individually evaluated for impairment		$	1,737				—				9,889				—			574				—				—			—			—				12,200

Ending balance collectively evaluated for impairment		$	350,802				40,546				555,054				257,936			30,305				8,868				43,728			30,357			52,986				1,370,582

Ending balance loans acquired with deteriorated credit quality		$	—				—				—				—			—				—				—			—			—				—




		Residential				Multifamily				Commercial				Construction			Farmland				Second				Equity Lines			Commercial			Agricultural,				Total
		1-4 Family								Real Estate											Mortgages				of Credit						Installment
																															and Other
December 31, 2014
Allowance for loan losses:
Beginning balance		$	4,935				77				10,918				5,159			618				205				300			395			328				22,935
Provision			1,059				95				(378	)			102			176				(164	)			3			(641	)		246				498
Charge-offs			(468	)			—				(968	)			(7	)		—				—				—			(37	)		(387	)			(1,867	)
Recoveries			56				—				6				324			1				20				1			459			139				1,006

Ending balance		$	5,582				172				9,578				5,578			795				61				304			176			326				22,572

Ending balance individually evaluated for impairment		$	376				—				1,135				—			120				—				—			—			—				1,631

Ending balance collectively evaluated for impairment		$	5,206				172				8,443				5,578			675				61				304			176			326				20,941

Ending balance loans acquired with deteriorated credit quality		$	—				—				—				—			—				—				—			—			—				—

Loans:
Ending balance		$	350,758				31,242				564,965				245,830			30,236				9,026				41,496			30,000			53,225				1,356,778

Ending balance individually evaluated for impairment		$	3,061				—				6,455				—			701				280				—			—			—				10,497

Ending balance collectively evaluated for impairment		$	347,697				31,242				558,510				245,830			29.535				8,746				41,496			30,000			53,225				1,346,281

Ending balance loans acquired with deteriorated credit quality		$	—				—				—				—			—				—				—			—			—				—




Impaired Loans

At March 31, 2015, the Company had certain impaired loans of $4,694,000 which were on non-accruing interest status. At December 31, 2014, the Company had certain impaired loans of $574,000 which were on non-accruing interest status. In each case, at the date such loans were placed on nonaccrual status, the Company reversed all previously accrued interest income against current year earnings. The following table presents the Company’s impaired loans at March 31, 2015 and December 31, 2014.



		In Thousands
						Unpaid								Average			Interest
		Recorded				Principal				Related				Recorded			Income
		Investment				Balance				Allowance				Investment			Recognized
March 31, 2015
With no related allowance recorded:
Residential 1-4 family		$	1,002				974				—				1,446			15
Multifamily			—				—				—				—			—
Commercial real estate			5,135				5,121				—				3,244			(1	)
Construction			—				—				—				—			—
Farmland			—				—				—				—			—
Second mortgages			—				—				—				141			—
Equity lines of credit			—				—				—				—			—
Commercial			—				—				—				—			—
Agricultural			—				—				—				—			—

		$	6,137				6,095				—				4,831			14

With allowance recorded:
Residential 1-4 family		$	772				763				243				996			12
Multifamily			—				—				—				—			—
Commercial real estate			4,806				6,472				1,110				4,969			53
Construction			—				—				—				—			—
Farmland			574				574				52				638			—
Second mortgages			—				—				—				—			—
Equity lines of credit			—				—				—				—			—
Commercial			—				—				—				—			—
Agricultural			—				—				—				—			—

		$	6,152				7,809				1,405				6,603			65

Total
Residential 1-4 family		$	1,774				1,737				243				2,442			27
Multifamily			—				—				—				—			—
Commercial real estate			9,941				11,593				1,110				8,213			52
Construction			—				—				—				—			—
Farmland			574				574				52				638			—
Second mortgages			—				—				—				141			—
Equity lines of credit			—				—				—				—			—
Commercial			—				—				—				—			—
Agricultural			—				—				—				—			—

		$	12,289				13,904				1,405				11,434			79




		In Thousands
						Unpaid								Average			Interest
		Recorded				Principal				Related				Recorded			Income
		Investment				Balance				Allowance				Investment			Recognized
December 31, 2014
With no related allowance recorded:
Residential 1-4 family		$	1,891				1,854				—				1,081			114
Multifamily			—				—				—				—			—
Commercial real estate			1,352				2,188				—				5,984			95
Construction			—				—				—				673			—
Farmland			—				—				—				—			—
Second mortgages			281				280				—				222			3
Equity lines of credit			—				—				—				—			—
Commercial			—				—				—				—			—
Agricultural, installment and other			—				—				—				—			—

		$	3,524				4,322				—				7,960			212

With allowance recorded:
Residential 1-4 family		$	1,219				1,207				376				1,363			61
Multifamily			—				—				—				—			—
Commercial real estate			5,131				6,811				1,135				5,755			202
Construction			—				—				—				1,815			—
Farmland			702				701				120				767			7
Second mortgages			—				—				—				—			—
Equity lines of credit			—				—				—				—			—
Commercial			—				—				—				—			—
Agricultural, installment and other			—				—				—				—			—

		$	7,052				8,719				1,631				9,700			270

Total:
Residential 1-4 family		$	3,110				3,061				376				2,444			175
Multifamily			—				—				—				—			—
Commercial real estate			6,483				8,999				1,135				11,739			297
Construction			—				—				—				2,488			—
Farmland			702				701				120				767			7
Second mortgages			281				280				—				222			3
Equity lines of credit			—				—				—				—			—
Commercial			—				—				—				—			—
Agricultural, installment and other			—				—				—				—			—

		$	10,576				13,041				1,631				17,660			482


Impaired loans also include loans that the Company may elect to formally restructure due to the weakening credit status of a borrower such that the restructuring may facilitate a repayment plan that minimizes the potential losses that the Company may have to otherwise incur. These loans are classified as impaired loans and, if on non-accruing status as of the date of restructuring, the loans are included in the nonperforming loan balances noted above. Not included in nonperforming loans are loans that have been restructured that were performing as of the restructure date.



Troubled Debt Restructuring

The Company’s loan portfolio includes certain loans that have been modified in a troubled debt restructuring (TDR), where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. The concessions typically result from the Company’s loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. Certain TDR’s are classified as nonperforming at the time of the restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months.

The following table summarizes the carrying balances of TDRs at March 31, 2015 and December 31, 2014 (dollars in thousands):



		March 31, 2015				December 31, 2014
Performing TDRs		$	4,387				4,443
Nonperforming TDRs			3,486				3,597

Total TDRs		$	7,873				8,040




The following table outlines the amount of each troubled debt restructuring categorized by loan classification for the three months ended March 31, 2015 and the year ended December 31, 2014 (dollars in thousands):



		March 31, 2015												December 31, 2014
		Number				Pre				Post				Number			Pre				Post
		of				Modification				Modification				of			Modification				Modification
		Contracts				Outstanding				Outstanding				Contracts			Outstanding				Outstanding
						Recorded				Recorded							Recorded				Recorded
						Investment				Investment,							Investment				Investment,
										Net of Related											Net of Related
										Allowance											Allowance
Residential 1-4 family			—			$	—			$	—				6		$	1,346			$	1,218
Multifamily			—				—				—				—			—				—
Commercial real estate			—				—				—				2			1,020				1,020
Construction			—				—				—				—			—				—
Farmland			—				—				—				—			—				—
Second mortgages			—				—				—				—			—				—
Equity lines of credit			—				—				—				—			—				—
Commercial			—				—				—				1			3				3
Agricultural, installment and other			1				2				2				1			1				1

Total			1			$	2			$	2				10		$	2,370			$	2,242


As of March 31, 2015 and December 31, 2014, the Company did not have any loans previously classified as troubled debt restructurings subsequently default within twelve months of restructuring. A default is defined as an occurrence which violates the terms of the receivable’s contract.



As of March 31, 2015, the Company’s recorded investment in consumer mortgage loans in the process of foreclosure amounted to $718,000.

Potential problem loans, which include nonperforming loans, amounted to approximately $35.6 million at March 31, 2015 compared to $35.8 million at December 31, 2014. Potential problem loans represent those loans with a well defined weakness and where information about possible credit problems of borrowers has caused management to have serious doubts about the borrower’s ability to comply with present repayment terms. This definition is believed to be substantially consistent with the standards established by the FDIC, the Bank’s primary federal regulator, for loans classified as special mention, substandard, or doubtful.

The following summary presents our loan balances by primary loan classification and the amount classified within each risk rating category. Pass rated loans include all credits other than those included in special mention, substandard and doubtful which are defined as follows:


	•		Special mention loans have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Bank’s credit position at some future date.


	•		Substandard loans are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize liquidation of the debt. Substandard loans are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected.


	•		Doubtful loans have all the characteristics of substandard loans with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The Bank considers all doubtful loans to be impaired and places the loan on nonaccrual status.



The following table is a summary of the Bank’s loan portfolio by risk rating:



		Residential				Multifamily				Commercial				Construction			Farmland				Second				Equity			Commercial			Agricultural				Total
		1-4 Family								Real Estate											Mortgages				Lines						Installment
																									of Credit						and Other
March 31, 2015
Credit Risk Profile by Internally Assigned Rating
Pass		$	342,965				40,546				541,373				257,547			29,935				8,023				43,535			30,337			52,874				1,347,135
Special Mention			5,941				—				13,160				338			34				274				187			17			8				19,959
Substandard			3,633				—				10,410				51			910				571				6			3			104				15,688
Doubtful			—				—				—				—			—				—				—			—			—				—

Total		$	352,539				40,546				564,943				257,936			30,879				8,868				43,728			30,357			52,986				1,382,782

December 31, 2014
Credit Risk Profile by Internally Assigned Rating
Pass		$	339,529				31,242				545,301				243,416			29,260				8,007				41,274			29,893			53,048				1,320,970
Special Mention			7,681				—				13,313				2,362			57				347				176			18			16				23,970
Substandard			3,548				—				6,351				52			919				672				46			89			161				11,838
Doubtful			—				—				—				—			—				—				—			—			—				—

Total		$	350,758				31,242				564,965				245,830			30,236				9,026				41,496			30,000			53,225				1,356,778

Debt_and_Equity_Securities

Debt and Equity Securities	3 Months Ended
Debt and Equity Securities	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Debt and Equity Securities	Note 3. Debt and Equity Securities

	Debt and equity securities have been classified in the consolidated balance sheet according to management’s intent. Debt and equity securities at March 31, 2015 and December 31, 2014 are summarized as follows:



			March 31, 2015
			Securities Available-For-Sale
			In Thousands
			Amortized			Gross			Gross			Estimated
			Cost			Unrealized			Unrealized			Market
						Gains			Losses			Value
	Government-sponsored enterprises (GSEs)*		$	126,302		$	338		$	623		$	126,017
	Mortgage-backed:
	GSE residential			165,971			1,132			234			166,869
	Asset-backed:
	SBAP			29,571			280			50			29,801
	Obligations of states and political subdivisions			13,957			84			117			13,924

			$	335,801		$	1,834		$	1,024		$	336,611


			March 31, 2015
			Securities Held-To-Maturity
			In Thousands
			Amortized			Gross			Gross			Estimated
			Cost			Unrealized			Unrealized			Market
						Gains			Losses			Value
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	7,351		$	82		$	113		$	7,320
	Obligations of states and political subdivisions			20,803			310			44			21,069

			$	28,154		$	392		$	157		$	28,389



	*	Such as Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks, Federal Farm Credit Banks and Government National Mortgage Association.



			December 31, 2014
			Securities Available-For-Sale
			In Thousands
			Amortized			Gross			Gross			Estimated
			Cost			Unrealized			Unrealized			Market
						Gains			Losses			Value
	Government-sponsored enterprises (GSEs)*		$	131,767			129			1,329			130,567
	Mortgage-backed:
	GSE residential			170,802			731			464			171,069
	Asset-backed:
	SBAP			30,627			98			205			30,520
	Obligations of states and political subdivisions			14,324			98			158			14,264

			$	347,520			1,056			2,156			346,420




			December 31, 2014
			Securities Held-To-Maturity
			In Thousands
			Amortized			Gross			Gross			Estimated
			Cost			Unrealized			Unrealized			Market
						Gains			Losses			Value
Mortgage-backed:
Government-sponsored enterprises (GSEs)* residential		$	7,398			76			147			7,327
Obligations of states and political subdivisions			20,725			389			41			21,073

		$	28,123			465			188			28,400



*	Such as Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks, Federal Farm Credit Banks and Government National Mortgage Association.

The amortized cost and estimated market value of debt securities at March 31, 2015, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.



		Held-to-Maturity						Available-for-Sale
		In Thousands
					Estimated						Estimated
		Amortized			Market			Amortized			Market
		Cost			Value			Cost			Value
Due in one year or less		$	3,133		$	3,165		$	2,001		$	2,002
Due after one year through five years			10,139			10,295			59,146			59,080
Due after five years through ten years			3,741			3,769			148,273			148,496
Due after ten years			11,141			11,160			126,381			127,033

		$	28,154		$	28,389		$	335,801		$	336,611




The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2015 and December 31, 2014.



		In Thousands, Except Number of Securities
		Less than 12 Months									12 Months or More							Total
March 31, 2015		Fair			Unrealized			Number			Fair			Unrealized		Number		Fair Value		Unrealized
		Value			Losses			of			Value			Losses		of				Losses
								Securities								Securities
								Included								Included
Held to Maturity Securities:
Mortgage-backed:
Government-sponsored enterprises (GSEs)* residential		$	—		$	—			—		$	3,067		$	113		3	$	3,067	$	113
Obligations of states and political subdivisions			7,723			31			19			836			13		2		8,559		44

		$	7,723		$	31			19		$	3,903		$	126		5	$	11,626	$	157

Available-for-Sale Securities:
US Government - Sponsored enterprises (GSEs)		$	17,898		$	37			5		$	57,853		$	586		18	$	75,751	$	623
Mortgage-backed:
GSEs residential			34,835			169			22			9,486			65		8		44,321		234
Asset-backed: SBAP			5,872			50			4			—			—		—		5,872		50
Obligations of states and political subdivisions			1,036			9			3			4,442			108		12		5,478		117

		$	59,641		$	265			34		$	71,781		$	759		38	$	131,422	$	1,024




		In Thousands, Except Number of Securities
		Less than 12 Months									12 Months or More							Total
								Number								Number
								of								of
		Fair			Unrealized			Securities			Fair			Unrealized		Securities		Fair		Unrealized
December 31, 2014		Value			Losses			Included			Value			Losses		Included		Value		Losses
Held to Maturity Securities:
Mortgage-backed:
Government-sponsored enterprises (GSEs)* residential		$	—		$	—			—		$	4,674		$	147		4	$	4,674	$	147
Obligations of states and political subdivisions			—			—			—			2,577			41		6		2,577		41

		$	—		$	—			—		$	7,251		$	188		10	$	7,251	$	188

Available-for-Sale Securities:
GSEs		$	34,753		$	143			10		$	74,250		$	1,186		24	$	109,003	$	1,329
Mortgage-backed:
GSE residential			66,504			279			36			22,172			185		13		88,676		464
Asset-backed: SBAP			16,114			205			9			—			—		—		16,114		205
Obligations of states and political subdivisions			2,078			8			4			4,699			150		13		6,777		158

		$	119,449		$	635			59		$	101,121		$	1,521		50	$	220,570	$	2,156




Because the Company does not intend to sell these securities and it is not more likely than not that the Company will be required to sell the securities before recovery of their amortized cost bases, which may be at maturity, the Company does not consider these securities to be other-than-temporarily impaired at March 31, 2015.

The carrying values of the Company’s investment securities could decline in the future if the financial condition of issuers deteriorate and management determines it is probable that the Company will not recover the entire amortized cost bases of the securities. As a result, there is a risk that other-than-temporary impairment charges may occur in the future given the current economic environment.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
Earnings Per Share	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Note 4. Earnings Per Share

	The computation of basic earnings per share is based on the weighted average number of common shares outstanding during the period. The computation of diluted earnings per share for the Company begins with the basic earnings per share plus the effect of common shares contingently issuable from stock options.

	The following is a summary of components comprising basic and diluted earnings per share (“EPS”) for the three months ended March 31, 2015 and 2014:



		2015		2014
		(Dollars in Thousands
		Except Per Share Amounts)
	Basic EPS Computation:
	Numerator – Earnings available to common Stockholders	$	5,616	$	4,172

	Denominator – Weighted average number of common shares outstanding		7,597,396		7,522,280

	Basic earnings per common share	$	0.74	$	0.55

	Diluted EPS Computation:
	Numerator – Earnings available to common Stockholders	$	5,616	$	4,172

	Denominator – Weighted average number of common shares outstanding		7,597,396		7,522,280
	Dilutive effect of stock options		3,385		4,356

			7,600,781		7,526,636

	Diluted earnings per common share	$	0.74	$	0.55

Income_Taxes

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Note 5. Income Taxes
	Accounting Standards Codification (“ASC”) 740, Income Taxes, defines the threshold for recognizing the benefits of tax return positions in the financial statements as “more-likely-than-not” to be sustained by the taxing authority. This section also provides guidance on the derecognition, measurement and classification of income tax uncertainties, along with any related interest and penalties, and includes guidance concerning accounting for income tax uncertainties in interim periods. As of March 31, 2015, the Company had no unrecognized tax benefits related to Federal or State income tax matters and does not anticipate any material increase or decrease in unrecognized tax benefits relative to any tax positions taken prior to March 31, 2015.
	As of March 31, 2015, the Company has accrued no interest and no penalties related to uncertain tax positions. The Company’s policy is to recognize interest and/or penalties related to income tax matters in income tax expense.
	The Company and its subsidiaries file consolidated U.S. Federal and state of Tennessee income tax returns. The Company is currently open to audit under the statute of limitations by the state of Tennessee for the years ended December 31, 2012 through 2014 and the IRS for the years ended December 31, 2012 through 2014.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 6. Commitments and Contingent Liabilities

	In the normal course of business, the Bank has entered into off-balance sheet financial instruments which include commitments to extend credit (i.e., including unfunded lines of credit) and standby letters of credit. Commitments to extend credit are usually the result of lines of credit granted to existing borrowers under agreements that the total outstanding indebtedness will not exceed a specific amount during the term of the indebtedness. Typical borrowers are commercial concerns that use lines of credit to supplement their treasury management functions, thus their total outstanding indebtedness may fluctuate during any time period based on the seasonality of their business and the resultant timing of their cash flows. Other typical lines of credit are related to home equity loans granted to consumers. Commitments to extend credit generally have fixed expiration dates or other termination clauses and may require payment of a fee.

	Standby letters of credit are generally issued on behalf of an applicant (our customer) to a specifically named beneficiary and are the result of a particular business arrangement that exists between the applicant and the beneficiary. Standby letters of credit have fixed expiration dates and are usually for terms of two years or less unless terminated beforehand due to criteria specified in the standby letter of credit. A typical arrangement involves the applicant routinely being indebted to the beneficiary for such items as inventory purchases, insurance, utilities, lease guarantees or other third party commercial transactions. The standby letter of credit would permit the beneficiary to obtain payment from the Company under certain prescribed circumstances. Subsequently, the Company would then seek reimbursement from the applicant pursuant to the terms of the standby letter of credit.

	The Company follows the same credit policies and underwriting practices when making these commitments as it does for on-balance sheet instruments. Each customer’s creditworthiness is evaluated on a case-by-case basis, and the amount of collateral obtained, if any, is based on management’s credit evaluation of the customer. Collateral held varies but may include cash, real estate and improvements, marketable securities, accounts receivable, inventory, equipment, and personal property.

	The contractual amounts of these commitments are not reflected in the consolidated financial statements and would only be reflected if drawn upon. Since many of the commitments are expected to expire without being drawn upon, the contractual amounts do not necessarily represent future cash requirements. However, should the commitments be drawn upon and should our customers default on their resulting obligation to us, the Company’s maximum exposure to credit loss, without consideration of collateral, is represented by the contractual amount of those instruments.



	A summary of the Company’s total contractual amount for all off-balance sheet commitments at March 31, 2015 is as follows:



	Commitments to extend credit	$	325,328,000
	Standby letters of credit	$	32,318,000

	The Company originates residential mortgage loans, sells them to third-party purchasers, and does not retain the servicing rights. These loans are originated internally and are primarily to borrowers in the Company’s geographic market footprint. These sales are typically on a best efforts basis to investors that follow conventional government sponsored entities (GSE) and the Department of Housing and Urban Development/U.S. Department of Veterans Affairs (HUD/VA) guidelines. Generally, loans held for sale are underwritten by the Company, including HUD/VA loans.

	Each purchaser has specific guidelines and criteria for sellers of loans, and the risk of credit loss with regard to the principal amount of the loans sold is generally transferred to the purchasers upon sale. While the loans are sold without recourse, the purchase agreements require the Company to make certain representations and warranties regarding the existence and sufficiency of file documentation and the absence of fraud by borrowers or other third parties such as appraisers in connection with obtaining the loan. If it is determined that the loans sold were in breach of these representations or warranties, the Company has obligations to either repurchase the loan for the unpaid principal balance and related investor fees or make the purchaser whole for the economic benefits of the loan.

	To date, repurchase activity pursuant to the terms of these representations and warranties has been insignificant and has resulted in insignificant losses to the Company.

	Based on information currently available, management believes that it does not have significant exposure to contingent losses that may arise relating to the representations and warranties that it has made in connection with its mortgage loan sales.

	Various legal claims also arise from time to time in the normal course of business. In the opinion of management, the resolution of these claims outstanding at March 31, 2015 will not have a material impact on the Company’s financial statements.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 7. Fair Value Measurements

	FASB ASC 820, Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value in U.S. GAAP and expands disclosures about fair value measurements. The definition of fair value focuses on the exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, not the entry price, i.e., the price that would be paid to acquire the asset or received to assume the liability at the measurement date. The statement emphasizes that fair value is a market-based measurement; not an entity-specific measurement. Therefore, the fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability.



	Valuation Hierarchy



	FASB ASC 820 establishes a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows:


		•		Level 1 — inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.


		•		Level 2 — inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.
		•		Level 3 — inputs to the valuation methodology are unobservable and significant to the fair value measurement.

	A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Following is a description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy.

	Assets

	Securities available-for-sale — Where quoted prices are available for identical securities in an active market, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities include highly liquid government securities and certain other financial products. If quoted market prices are not available, then fair values are estimated by using pricing models that use observable inputs or quoted prices of securities with similar characteristics and are classified within Level 2 of the valuation hierarchy. In certain cases where there is limited activity or less transparency around inputs to the valuation and more complex pricing models or discounted cash flows are used, securities are classified within Level 3 of the valuation hierarchy.

	Impaired loans — A loan is considered to be impaired when it is probable the Company will be unable to collect all principal and interest payments due in accordance with the contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected payments using the loan’s original effective rate as the discount rate, the loan’s observable market price, or the fair value of the collateral less selling costs if the loan is collateral dependent. If the recorded investment in the impaired loan exceeds the measure of fair value, a valuation allowance may be established as a component of the allowance for loan losses or the expense is recognized as a charge-off. Impaired loans are classified within Level 3 of the valuation hierarchy due to the unobservable inputs used in determining their fair value such as collateral values and the borrower’s underlying financial condition.

	Other real estate owned — Other real estate owned (“OREO”) represents real estate foreclosed upon by the Company through loan defaults by customers or acquired in lieu of foreclosure. Substantially all of these amounts relate to construction and land development, other land secured loans, and commercial real estate loans for which the Company believes it has adequate collateral. Upon foreclosure, the property is recorded at the lower of cost or fair value, based on appraised value, less selling costs estimated as of the date acquired with any loss recognized as a charge-off through the allowance for loan losses. Additional OREO losses for subsequent valuation downward adjustments are determined on a specific property basis and are included as a component of non-interest expense along with holding costs. Any gains or losses realized at the time of disposal are also reflected in non-interest expense, as applicable. OREO is included in Level 3 of the valuation hierarchy due to the lack of observable market inputs into the determination of fair value. Appraisal values are property-specific and sensitive to the changes in the overall economic environment.



	Other assets — Included in other assets are certain assets carried at fair value, including the cash surrender value of bank owned life insurance policies and annuity contracts. The Company uses financial information received from insurance carriers indicating the performance of the insurance policies and cash surrender values in determining the carrying value of life insurance. The Company reflects these assets within Level 3 of the valuation hierarchy due to the unobservable inputs included in the valuation of these items. The Company does not consider the fair values of these policies to be materially sensitive to changes in these unobservable inputs.

	The following tables present the financial instruments carried at fair value as of March 31, 2015 and December 31, 2014, by caption on the consolidated balance sheet and by FASB ASC 820 valuation hierarchy (as described above) (in thousands):



			Assets and Liabilities Measured at Fair Value on a Recurring Basis
			Total Carrying			Quoted Market			Models with			Models with
			Value in the			Prices in an			Significant			Significant
			Consolidated			Active Market			Observable			Unobservable
			Balance			(Level 1)			Market			Market
			Sheet						Parameters			Parameters
									(Level 2)			(Level 3)
	31-Mar-15
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	126,017			—			126,017			—
	Mortgage-backed securities			166,869			—			166,869			—
	Asset-backed securities			29,801			—			29,801			—
	State and municipal securities			13,924			—			13,924			—

	Total investment securities available-for-sale			336,611			—			336,611			—
	Other assets			25,125			—			—			25,125

	Total assets at fair value		$	361,736			—			336,611			25,125

	December 31, 2014
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	130,567			—			130,567			—
	Mortgage-backed securities			171,069			—			171,069			—
	Asset-backed securities			30,520			—			30,520			—
	State and municipal securities			14,264			—			14,264			—

	Total investment securities available-for-sale			346,420			—			346,420			—
Other assets			17,331			—			—			17,331

Total assets at fair value		$	363,751			—			346,420			17,331




		Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
		Total Carrying			Quoted Market			Models with			Models with
		Value in the			Prices in an			Significant			Significant
		Consolidated			Active Market			Observable			Unobservable
		Balance			(Level 1)			Market			Market
		Sheet						Parameters			Parameters
								(Level 2)			(Level 3)
March 31, 2015
Other real estate owned		$	7,033			—			—			7,033
Impaired loans, net (¹)			10,795			—			—			10,795

Total		$	17,828			—			—			17,828

December 31, 2014
Other real estate owned		$	7,298			—			—			7,298
Impaired loans, net (¹)			8,866			—			—			8,866

Total		$	16,164			—			—			16,164



(¹)	Amount is net of a valuation allowance of $1.4 million at March 31, 2015 and $1.6 million at December 31, 2014 as required by ASC 310, “Receivables.”

In the case of the bond portfolio, the Company monitors the valuation technique utilized by various pricing agencies to ascertain when transfers between levels have been affected. The nature of the remaining assets and liabilities is such that transfers in and out of any level are expected to be rare. For the three months ended March 31, 2015, there were no transfers between Levels 1, 2 or 3.



The table below includes a rollforward of the balance sheet amounts for the three months ended March 31, 2015 and 2014 (including the change in fair value) for financial instruments classified by the Company within Level 3 of the valuation hierarchy for assets and liabilities measured at fair value on a recurring basis. When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, since Level 3 financial instruments typically include, in addition to the unobservable or Level 3 components, observable components (that is, components that are actively quoted and can be validated to external sources), the gains and losses in the table below include changes in fair value due in part to observable factors that are part of the valuation methodology (in thousands):



		For the Three Months Ended March 31,
		2015						2014
		Other			Other			Other			Other
		Assets			Liabilities			Assets			Liabilities
Fair value, January 1		$	17,331			—		$	11,390			—
Total realized gains included in income			392			—			47			—
Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at March 31			—			—			—			—
Purchases, issuances and settlements, net			7,402			—			5,000			—
Transfers out of Level 3			—			—			—			—

Fair value, March 31		$	25,125			—		$	16,437			—

Total realized gains included in income related to financial assets and liabilities still on the consolidated balance sheet at March 31		$	392			—		$	47			—


The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments that are not measured at fair value. In cases where quoted market prices or observable components are not available, fair values are based on estimates using discounted cash flow models. Those models are significantly affected by the assumptions used, including the discount rates, estimates of future cash flows and borrower creditworthiness. The fair value estimates presented herein are based on pertinent information available to management as of March 31, 2015 and December 31, 2014. Such amounts have not been revalued for purposes of these consolidated financial statements since those dates and, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

Held-to-maturity securities — Estimated fair values for investment securities are based on quoted market prices where available. If quoted market prices are not available, then fair values are estimated by using pricing models that use observable inputs or quoted prices of securities with similar characteristics.

Loans — The fair value of our loan portfolio includes a credit risk factor in the determination of the fair value of our loans. This credit risk assumption is intended to approximate the fair value that a market participant would realize in a hypothetical orderly transaction. Our loan portfolio is initially fair valued using a segmented approach. We divide our loan portfolio into the following categories: variable rate loans, impaired loans and all other loans. The results are then adjusted to account for credit risk.

For variable-rate loans that reprice frequently and have no significant change in credit risk, fair values approximate carrying values. Fair values for impaired loans are estimated using discounted cash flow models or based on the fair value of the underlying collateral. For other loans, fair values are estimated using discounted cash flow models, using current market interest rates offered for loans with similar terms to borrowers of similar credit quality. The values derived from the discounted cash flow approach for each of the above portfolios are then further discounted to incorporate credit risk to determine the exit price.

Mortgage loans held-for-sale — Mortgage loans held-for-sale are carried at the lower of cost or fair value. The estimate of fair value is equal to the carrying value of these loans as they are usually sold within a few weeks of their origination.

Deposits and Securities sold under agreements to repurchase — The carrying amounts of demand deposits, savings deposits and securities sold under agreements to repurchase, approximate their fair values. Fair values for certificates of deposit are estimated using discounted cash flow models, using current market interest rates offered on certificates with similar remaining maturities.

Off-Balance Sheet Instruments — The fair values of the Company’s off-balance sheet financial instruments are based on fees charged to enter into similar agreements. However, commitments to extend credit do not represent a significant value to the Company until such commitments are funded.

The following table presents the carrying amounts, estimated fair value and placement in the fair valuation hierarchy of the Company’s financial instruments at March 31, 2015 and December 31, 2014. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as non-interest bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity.



(in Thousands)		Carrying/			Estimated			Quoted Market			Models with			Models with
		Notional			Fair Value (¹)			Prices in			Significant			Significant
		Amount						an Active			Observable			Unobservable
								Market			Market			Market
								(Level 1)			Parameters			Parameters
											(Level 2)			(Level 3)
March 31, 2015
Financial assets:
Securities held-to-maturity		$	28,154			28,389			—			28,389			—
Loans, net			1,355,781			1,373,614			—			—			1,373,614
Mortgage loans held-for-sale			11,983			11,983			—			—			11,983
Financial liabilities:
Deposits and securities sold under agreements to repurchase			1,704,954			1,581,942			—			—			1,581,942
Off-balance sheet instruments:
Commitments to extend credit			—			—			—			—			—
Standby letters of credit			—			—			—			—			—
December 31, 2014
Financial assets:
Securities held-to-maturity		$	28,123			28,400			—			28,400			—
Loans, net			1,329,865			1,346,569			—			—			1,346,569
Mortgage loans held-for-sale			9,466			9,466			—			—			9,466
Financial liabilities:
Deposits and securities sold under agreements to repurchase			1,663,707			1,530,607			—			—			1,530,607
Off-balance sheet instruments:
Commitments to extend credit			—			—			—			—			—
Standby letters of credit			—			—			—			—			—


(¹)	Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2015
Accounting Policies [Abstract]
Nature of Business	Nature of Business — Wilson Bank Holding Company (the “Company”) is a bank holding company whose primary business is conducted by its wholly-owned subsidiary, Wilson Bank & Trust (the “Bank”). The Bank is a commercial bank headquartered in Lebanon, Tennessee. The Bank provides a full range of banking services in its primary market areas of Wilson, Davidson, Rutherford, Trousdale, Sumner, Dekalb, Smith, and Putnam Counties, Tennessee.
Basis of Presentation	Basis of Presentation — The accompanying unaudited, consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and related notes appearing in the 2014 Annual Report previously filed on Form 10-K.
Basis of Presentation	These consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. Significant intercompany transactions and accounts are eliminated in consolidation.
Use of Estimates	Use of Estimates — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include the determination of the allowance for loan losses, the valuation of deferred tax assets, determination of any impairment of intangibles, other-than-temporary impairment of securities, the valuation of other real estate, and the fair value of financial instruments. These financial statements should be read in conjunction with Wilson Bank Holding Company’s Annual Report on Form 10-K for the year ended December 31, 2014. There have been no significant changes to Wilson Bank Holding Company’s significant accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.
Loans	Loans — Loans are reported at their outstanding principal balances less unearned income, the allowance for loan losses and any deferred fees or costs on originated loans. Interest income on loans is accrued based on the principal balance outstanding. Loan origination fees, net of certain loan origination costs, are deferred and recognized as an adjustment to the related loan yield using a method which approximates the interest method.

	Loans are charged off when management believes that the full collectability of the loan is unlikely. As such, a loan may be partially charged-off after a “confirming event” has occurred which serves to validate that full repayment pursuant to the terms of the loan is unlikely.

	Loans are placed on nonaccrual status when there is a significant deterioration in the financial condition of the borrower, which often is determined when the principal or interest is more than 90 days past due, unless the loan is both well-secured and in the process of collection. Generally, all interest accrued but not collected for loans that are placed on nonaccrual status, is reversed against current income. Interest income is subsequently recognized only to the extent cash payments are received while the loan is classified as nonaccrual, but interest income recognition is reviewed on a case-by-case basis. A nonaccrual loan is returned to accruing status once the loan has been brought current and collection is reasonably assured or the loan has been “well-secured” through other techniques. Past due status is determined based on the contractual due date per the underlying loan agreement.



	All loans that are placed on nonaccrual are further analyzed to determine if they should be classified as impaired loans. At December 31, 2014 and at March 31, 2015, there were no loans classified as nonaccrual that were not also deemed to be impaired except for those loans not individually evaluated for impairment as described below. A loan is considered to be impaired when it is probable the Company will be unable to collect all principal and interest payments due in accordance with the contractual terms of the loan. This determination is made using a variety of techniques, which include a review of the borrower’s financial condition, debt-service coverage ratios, global cash flow analysis, guarantor support, other loan file information, meetings with borrowers, inspection or reappraisal of collateral and/or consultation with legal counsel as well as results of reviews of other similar industry credits (e.g. builder loans, development loans, church loans, etc). Generally, loans with an identified weakness and principal balance of $100,000 or more are subject to individual identification for impairment. During the first quarter of 2015, the Company increased the level of individual impairment on loans to $500,000, as the Company continues to see improvements in all areas of the business. Individually identified impaired loans are measured based on the present value of expected payments using the loan’s original effective rate as the discount rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. If the recorded investment in the impaired loan exceeds the measure of fair value, a specific valuation allowance is established as a component of the allowance for loan losses or, in the case of collateral dependent loans, the excess is charged off. Changes to the valuation allowance are recorded as a component of the provision for loan losses. Any subsequent adjustments to present value calculations for impaired loan valuations as a result of the passage of time, such as changes in the anticipated payback period for repayment, are recorded as a component of the provision for loan losses. For loans less than $500,000, the Company assigns a valuation allowance to these loans utilizing an allocation rate equal to the allocation rate calculated for loans of a similar type greater than $500,000.
Allowance for Loan Losses	Allowance for Loan Losses — The allowance for loan losses is maintained at a level that management believes to be adequate to absorb probable losses in the loan portfolio. Loan losses are charged against the allowance when they are known. Subsequent recoveries are credited to the allowance. Management’s determination of the adequacy of the allowance is based on an evaluation of the portfolio, current economic conditions, volume, growth, composition of the loan portfolio, homogeneous pools of loans, risk ratings of specific loans, historical loan loss factors, loss experience of various loan segments, identified impaired loans and other factors related to the portfolio. This evaluation is performed quarterly and is inherently subjective, as it requires material estimates that are susceptible to significant change including the amounts and timing of future cash flows expected to be received on any impaired loans.

	In assessing the adequacy of the allowance, we also consider the results of our ongoing independent loan review process. We undertake this process both to ascertain whether there are loans in the portfolio whose credit quality has weakened over time and to assist in our overall evaluation of the risk characteristics of the entire loan portfolio. Our loan review process includes the judgment of management, independent loan reviewers, and reviews that may have been conducted by third-party reviewers. We incorporate relevant loan review results in the loan impairment determination. In addition, regulatory agencies, as an integral part of their examination process, will periodically review the Company’s allowance for loan losses, and may require the Company to record adjustments to the allowance based on their judgment about information available to them at the time of their examinations.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-04, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure, to reduce the diversity in reporting when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. The amendments in this ASU clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The Company adopted this ASU in the first quarter of 2014 using the prospective method and had no loans that met the above stated criteria as of March 31, 2015.
	Other than the one disclosed above, there were no recently issued accounting pronouncements that are expected to materially impact the Company.
Income Taxes	Accounting Standards Codification (“ASC”) 740, Income Taxes, defines the threshold for recognizing the benefits of tax return positions in the financial statements as “more-likely-than-not” to be sustained by the taxing authority. This section also provides guidance on the derecognition, measurement and classification of income tax uncertainties, along with any related interest and penalties, and includes guidance concerning accounting for income tax uncertainties in interim periods. As of March 31, 2015, the Company had no unrecognized tax benefits related to Federal or State income tax matters and does not anticipate any material increase or decrease in unrecognized tax benefits relative to any tax positions taken prior to March 31, 2015.
Fair Value Measurements and Disclosures	FASB ASC 820, Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value in U.S. GAAP and expands disclosures about fair value measurements. The definition of fair value focuses on the exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, not the entry price, i.e., the price that would be paid to acquire the asset or received to assume the liability at the measurement date. The statement emphasizes that fair value is a market-based measurement; not an entity-specific measurement. Therefore, the fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability.

Loans_and_Allowance_for_Loan_L1

Loans and Allowance for Loan Losses (Tables)	3 Months Ended
Loans and Allowance for Loan Losses (Tables)	Mar. 31, 2015
Receivables [Abstract]
Schedule of Details on Loans of Company	The following schedule details the loans of the Company at March 31, 2015 and December 31, 2014:



			(In Thousands)
			March 31,			December 31,
			2015			2014
	Mortgage Loans on real estate
	Residential 1-4 family		$	352,539		$	350,758
	Multifamily			40,546			31,242
	Commercial			564,943			564,965
	Construction			257,936			245,830
	Farmland			30,879			30,236
	Second mortgages			8,868			9,026
	Equity lines of credit			43,728			41,496

	Total mortgage loans on real estate			1,299,439			1,273,553

	Commercial loans			30,357			30,000

	Agricultural loans			1,559			1,670

	Consumer installment loans
	Personal			37,825			37,745
	Credit cards			2,987			3,280

	Total consumer installment loans			40,812			41,025

	Other loans			10,615			10,530

				1,382,782			1,356,778

	Net deferred loan fees			(4,503	)		(4,341	)

	Total loans			1,378,279			1,352,437

	Less: Allowance for loan losses			(22,498	)		(22,572	)

	Net Loans		$	1,355,781		$	1,329,865

Transactions in Allowance for Loan Losses	Transactions in the allowance for loan losses for the three months ended March 31, 2015 and year ended December 31, 2014 are summarized as follows:



			Residential			Multifamily			Commercial			Construction			Farmland			Second			Equity Lines		Commercial			Agricultural,			Total
			1-4 Family						Real Estate									Mortgages			of Credit					Installment
																										and Other
	March 31, 2015
	Allowance for loan losses:
	Beginning balance		$	5,582			172			9,578			5,578			795			61			304		176			326			22,572
	Provision			29			51			(935	)		730			(85	)		52			35		76			122			75
	Charge-offs			(64	)		—			—			—			—			(20	)		—		—			(170	)		(254	)
	Recoveries			14			—			1			7			—			—			—		4			79			105

	Ending balance		$	5,561			223			8,644			6,315			710			93			339		256			357			22,498

	Ending balance individually evaluated for impairment		$	243			—			1,110			—			52			—			—		—			—			1,405

	Ending balance collectively evaluated for impairment		$	5,318			223			7,534			6,315			658			93			339		256			357			21,093

	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—		—			—			—

	Loans:
	Ending balance		$	352,539			40,546			564,943			257,936			30,879			8,868			43,728		30,357			52,986			1,382,782

	Ending balance individually evaluated for impairment		$	1,737			—			9,889			—			574			—			—		—			—			12,200

	Ending balance collectively evaluated for impairment		$	350,802			40,546			555,054			257,936			30,305			8,868			43,728		30,357			52,986			1,370,582

	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—		—			—			—




			Residential			Multifamily			Commercial			Construction			Farmland			Second			Equity Lines		Commercial			Agricultural,			Total
			1-4 Family						Real Estate									Mortgages			of Credit					Installment
																										and Other
	December 31, 2014
	Allowance for loan losses:
	Beginning balance		$	4,935			77			10,918			5,159			618			205			300		395			328			22,935
	Provision			1,059			95			(378	)		102			176			(164	)		3		(641	)		246			498
	Charge-offs			(468	)		—			(968	)		(7	)		—			—			—		(37	)		(387	)		(1,867	)
	Recoveries			56			—			6			324			1			20			1		459			139			1,006

	Ending balance		$	5,582			172			9,578			5,578			795			61			304		176			326			22,572

	Ending balance individually evaluated for impairment		$	376			—			1,135			—			120			—			—		—			—			1,631

	Ending balance collectively evaluated for impairment		$	5,206			172			8,443			5,578			675			61			304		176			326			20,941

	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—		—			—			—

	Loans:
	Ending balance		$	350,758			31,242			564,965			245,830			30,236			9,026			41,496		30,000			53,225			1,356,778

	Ending balance individually evaluated for impairment		$	3,061			—			6,455			—			701			280			—		—			—			10,497

	Ending balance collectively evaluated for impairment		$	347,697			31,242			558,510			245,830			29.535			8,746			41,496		30,000			53,225			1,346,281

	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—		—			—			—

Company's Impaired Loans	The following table presents the Company’s impaired loans at March 31, 2015 and December 31, 2014.



			In Thousands
						Unpaid						Average			Interest
			Recorded			Principal			Related			Recorded			Income
			Investment			Balance			Allowance			Investment			Recognized
	March 31, 2015
	With no related allowance recorded:
	Residential 1-4 family		$	1,002			974			—			1,446			15
	Multifamily			—			—			—			—			—
	Commercial real estate			5,135			5,121			—			3,244			(1	)
	Construction			—			—			—			—			—
	Farmland			—			—			—			—			—
	Second mortgages			—			—			—			141			—
	Equity lines of credit			—			—			—			—			—
	Commercial			—			—			—			—			—
	Agricultural			—			—			—			—			—

			$	6,137			6,095			—			4,831			14

	With allowance recorded:
	Residential 1-4 family		$	772			763			243			996			12
	Multifamily			—			—			—			—			—
	Commercial real estate			4,806			6,472			1,110			4,969			53
	Construction			—			—			—			—			—
	Farmland			574			574			52			638			—
	Second mortgages			—			—			—			—			—
	Equity lines of credit			—			—			—			—			—
	Commercial			—			—			—			—			—
	Agricultural			—			—			—			—			—

			$	6,152			7,809			1,405			6,603			65

	Total
	Residential 1-4 family		$	1,774			1,737			243			2,442			27
	Multifamily			—			—			—			—			—
	Commercial real estate			9,941			11,593			1,110			8,213			52
	Construction			—			—			—			—			—
	Farmland			574			574			52			638			—
	Second mortgages			—			—			—			141			—
	Equity lines of credit			—			—			—			—			—
	Commercial			—			—			—			—			—
	Agricultural			—			—			—			—			—

			$	12,289			13,904			1,405			11,434			79




			In Thousands
						Unpaid						Average			Interest
			Recorded			Principal			Related			Recorded			Income
			Investment			Balance			Allowance			Investment			Recognized
	December 31, 2014
	With no related allowance recorded:
	Residential 1-4 family		$	1,891			1,854			—			1,081			114
	Multifamily			—			—			—			—			—
	Commercial real estate			1,352			2,188			—			5,984			95
	Construction			—			—			—			673			—
	Farmland			—			—			—			—			—
	Second mortgages			281			280			—			222			3
	Equity lines of credit			—			—			—			—			—
Commercial			—			—			—			—			—
Agricultural, installment and other			—			—			—			—			—

		$	3,524			4,322			—			7,960			212

With allowance recorded:
Residential 1-4 family		$	1,219			1,207			376			1,363			61
Multifamily			—			—			—			—			—
Commercial real estate			5,131			6,811			1,135			5,755			202
Construction			—			—			—			1,815			—
Farmland			702			701			120			767			7
Second mortgages			—			—			—			—			—
Equity lines of credit			—			—			—			—			—
Commercial			—			—			—			—			—
Agricultural, installment and other			—			—			—			—			—

		$	7,052			8,719			1,631			9,700			270

Total:
Residential 1-4 family		$	3,110			3,061			376			2,444			175
Multifamily			—			—			—			—			—
Commercial real estate			6,483			8,999			1,135			11,739			297
Construction			—			—			—			2,488			—
Farmland			702			701			120			767			7
Second mortgages			281			280			—			222			3
Equity lines of credit			—			—			—			—			—
Commercial			—			—			—			—			—
Agricultural, installment and other			—			—			—			—			—

		$	10,576			13,041			1,631			17,660			482

Summary of Carrying Balances of TDRs	The following table summarizes the carrying balances of TDRs at March 31, 2015 and December 31, 2014 (dollars in thousands):


			March 31, 2015			December 31, 2014
	Performing TDRs		$	4,387			4,443
	Nonperforming TDRs			3,486			3,597

	Total TDRs		$	7,873			8,040

Troubled Debt Restructuring Categorized by Loan	The following table outlines the amount of each troubled debt restructuring categorized by loan classification for the three months ended March 31, 2015 and the year ended December 31, 2014 (dollars in thousands):



			March 31, 2015									December 31, 2014
			Number			Pre			Post			Number			Pre			Post
			of			Modification			Modification			of			Modification			Modification
			Contracts			Outstanding			Outstanding			Contracts			Outstanding			Outstanding
						Recorded			Recorded						Recorded			Recorded
						Investment			Investment,						Investment			Investment,
									Net of Related									Net of Related
									Allowance									Allowance
	Residential 1-4 family			—		$	—		$	—			6		$	1,346		$	1,218
	Multifamily			—			—			—			—			—			—
	Commercial real estate			—			—			—			2			1,020			1,020
	Construction			—			—			—			—			—			—
	Farmland			—			—			—			—			—			—
	Second mortgages			—			—			—			—			—			—
	Equity lines of credit			—			—			—			—			—			—
	Commercial			—			—			—			1			3			3
	Agricultural, installment and other			1			2			2			1			1			1

	Total			1		$	2		$	2			10		$	2,370		$	2,242

Summary of Loan Portfolio by Risk Rating	The following summary presents our loan balances by primary loan classification and the amount classified within each risk rating category. Pass rated loans include all credits other than those included in special mention, substandard and doubtful which are defined as follows:


		•		Special mention loans have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Bank’s credit position at some future date.


		•		Substandard loans are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize liquidation of the debt. Substandard loans are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected.


		•		Doubtful loans have all the characteristics of substandard loans with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The Bank considers all doubtful loans to be impaired and places the loan on nonaccrual status.



	The following table is a summary of the Bank’s loan portfolio by risk rating:



			Residential			Multifamily			Commercial			Construction			Farmland			Second			Equity		Commercial			Agricultural			Total
			1-4 Family						Real Estate									Mortgages			Lines					Installment
																					of Credit					and Other
	March 31, 2015
	Credit Risk Profile by Internally Assigned Rating
	Pass		$	342,965			40,546			541,373			257,547			29,935			8,023			43,535		30,337			52,874			1,347,135
	Special Mention			5,941			—			13,160			338			34			274			187		17			8			19,959
	Substandard			3,633			—			10,410			51			910			571			6		3			104			15,688
	Doubtful			—			—			—			—			—			—			—		—			—			—

	Total		$	352,539			40,546			564,943			257,936			30,879			8,868			43,728		30,357			52,986			1,382,782

	December 31, 2014
	Credit Risk Profile by Internally Assigned Rating
	Pass		$	339,529			31,242			545,301			243,416			29,260			8,007			41,274		29,893			53,048			1,320,970
	Special Mention			7,681			—			13,313			2,362			57			347			176		18			16			23,970
	Substandard			3,548			—			6,351			52			919			672			46		89			161			11,838
	Doubtful			—			—			—			—			—			—			—		—			—			—

	Total		$	350,758			31,242			564,965			245,830			30,236			9,026			41,496		30,000			53,225			1,356,778

Debt_and_Equity_Securities_Tab

Debt and Equity Securities (Tables)	3 Months Ended
Debt and Equity Securities (Tables)	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of Debt and Equity Securities	Debt and equity securities have been classified in the consolidated balance sheet according to management’s intent. Debt and equity securities at March 31, 2015 and December 31, 2014 are summarized as follows:



			March 31, 2015
			Securities Available-For-Sale
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	Government-sponsored enterprises (GSEs)*		$	126,302	$	338	$	623	$	126,017
	Mortgage-backed:
	GSE residential			165,971		1,132		234		166,869
	Asset-backed:
	SBAP			29,571		280		50		29,801
	Obligations of states and political subdivisions			13,957		84		117		13,924

			$	335,801	$	1,834	$	1,024	$	336,611


			March 31, 2015
			Securities Held-To-Maturity
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	7,351	$	82	$	113	$	7,320
	Obligations of states and political subdivisions			20,803		310		44		21,069

			$	28,154	$	392	$	157	$	28,389



	*	Such as Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks, Federal Farm Credit Banks and Government National Mortgage Association.



			December 31, 2014
			Securities Available-For-Sale
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	Government-sponsored enterprises (GSEs)*		$	131,767		129		1,329		130,567
	Mortgage-backed:
	GSE residential			170,802		731		464		171,069
	Asset-backed:
	SBAP			30,627		98		205		30,520
	Obligations of states and political subdivisions			14,324		98		158		14,264

			$	347,520		1,056		2,156		346,420




			December 31, 2014
			Securities Held-To-Maturity
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	7,398		76		147		7,327
Obligations of states and political subdivisions			20,725		389		41		21,073

		$	28,123		465		188		28,400



*	Such as Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks, Federal Farm Credit Banks and Government National Mortgage Association.
Maturity of Amortized Cost and Estimated Market Value of Debt Securities	The amortized cost and estimated market value of debt securities at March 31, 2015, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.



			Held-to-Maturity				Available-for-Sale
			In Thousands
					Estimated				Estimated
			Amortized		Market		Amortized		Market
			Cost		Value		Cost		Value
	Due in one year or less		$	3,133	$	3,165	$	2,001	$	2,002
	Due after one year through five years			10,139		10,295		59,146		59,080
	Due after five years through ten years			3,741		3,769		148,273		148,496
	Due after ten years			11,141		11,160		126,381		127,033

			$	28,154	$	28,389	$	335,801	$	336,611

Gross Unrealized Losses and Fair Value of Company's Investments	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2015 and December 31, 2014.



			In Thousands, Except Number of Securities
			Less than 12 Months						12 Months or More						Total
	March 31, 2015		Fair		Unrealized		Number		Fair		Unrealized		Number		Fair Value		Unrealized
			Value		Losses		of		Value		Losses		of				Losses
							Securities						Securities
							Included						Included
	Held to Maturity Securities:
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	—	$	—		—	$	3,067	$	113		3	$	3,067	$	113
	Obligations of states and political subdivisions			7,723		31		19		836		13		2		8,559		44

			$	7,723	$	31		19	$	3,903	$	126		5	$	11,626	$	157

	Available-for-Sale Securities:
	US Government - Sponsored enterprises (GSEs)		$	17,898	$	37		5	$	57,853	$	586		18	$	75,751	$	623
	Mortgage-backed:
	GSEs residential			34,835		169		22		9,486		65		8		44,321		234
	Asset-backed: SBAP			5,872		50		4		—		—		—		5,872		50
	Obligations of states and political subdivisions			1,036		9		3		4,442		108		12		5,478		117

			$	59,641	$	265		34	$	71,781	$	759		38	$	131,422	$	1,024




			In Thousands, Except Number of Securities
			Less than 12 Months						12 Months or More						Total
							Number						Number
							of						of
			Fair		Unrealized		Securities		Fair		Unrealized		Securities		Fair		Unrealized
	December 31, 2014		Value		Losses		Included		Value		Losses		Included		Value		Losses
	Held to Maturity Securities:
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	—	$	—		—	$	4,674	$	147		4	$	4,674	$	147
	Obligations of states and political subdivisions			—		—		—		2,577		41		6		2,577		41

			$	—	$	—		—	$	7,251	$	188		10	$	7,251	$	188

	Available-for-Sale Securities:
	GSEs		$	34,753	$	143		10	$	74,250	$	1,186		24	$	109,003	$	1,329
	Mortgage-backed:
	GSE residential			66,504		279		36		22,172		185		13		88,676		464
	Asset-backed: SBAP			16,114		205		9		—		—		—		16,114		205
	Obligations of states and political subdivisions			2,078		8		4		4,699		150		13		6,777		158

			$	119,449	$	635		59	$	101,121	$	1,521		50	$	220,570	$	2,156

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
Earnings Per Share (Tables)	Mar. 31, 2015
Earnings Per Share [Abstract]
Summary of Components Comprising Basic and Diluted Earnings Per Share	The following is a summary of components comprising basic and diluted earnings per share (“EPS”) for the three months ended March 31, 2015 and 2014:



		2015		2014
		(Dollars in Thousands
		Except Per Share Amounts)
	Basic EPS Computation:
	Numerator – Earnings available to common Stockholders	$	5,616	$	4,172

	Denominator – Weighted average number of common shares outstanding		7,597,396		7,522,280

	Basic earnings per common share	$	0.74	$	0.55

	Diluted EPS Computation:
	Numerator – Earnings available to common Stockholders	$	5,616	$	4,172

	Denominator – Weighted average number of common shares outstanding		7,597,396		7,522,280
	Dilutive effect of stock options		3,385		4,356

			7,600,781		7,526,636

	Diluted earnings per common share	$	0.74	$	0.55

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Total Contractual Amount for All Off-Balance Sheet Commitments	A summary of the Company’s total contractual amount for all off-balance sheet commitments at March 31, 2015 is as follows:



	Commitments to extend credit	$	325,328,000
	Standby letters of credit	$	32,318,000

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables present the financial instruments carried at fair value as of March 31, 2015 and December 31, 2014, by caption on the consolidated balance sheet and by FASB ASC 820 valuation hierarchy (as described above) (in thousands):



			Assets and Liabilities Measured at Fair Value on a Recurring Basis
			Total Carrying		Quoted Market		Models with		Models with
			Value in the		Prices in an		Significant		Significant
			Consolidated		Active Market		Observable		Unobservable
			Balance		(Level 1)		Market		Market
			Sheet				Parameters		Parameters
							(Level 2)		(Level 3)
	31-Mar-15
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	126,017		—		126,017		—
	Mortgage-backed securities			166,869		—		166,869		—
	Asset-backed securities			29,801		—		29,801		—
	State and municipal securities			13,924		—		13,924		—

	Total investment securities available-for-sale			336,611		—		336,611		—
	Other assets			25,125		—		—		25,125

	Total assets at fair value		$	361,736		—		336,611		25,125

	December 31, 2014
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	130,567		—		130,567		—
	Mortgage-backed securities			171,069		—		171,069		—
	Asset-backed securities			30,520		—		30,520		—
	State and municipal securities			14,264		—		14,264		—

	Total investment securities available-for-sale			346,420		—		346,420		—
	Other assets			17,331		—		—		17,331

	Total assets at fair value		$	363,751		—		346,420		17,331

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis	Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
			Total Carrying		Quoted Market		Models with		Models with
			Value in the		Prices in an		Significant		Significant
			Consolidated		Active Market		Observable		Unobservable
			Balance		(Level 1)		Market		Market
			Sheet				Parameters		Parameters
							(Level 2)		(Level 3)
	March 31, 2015
	Other real estate owned		$	7,033		—		—		7,033
	Impaired loans, net (¹)			10,795		—		—		10,795

	Total		$	17,828		—		—		17,828

	December 31, 2014
	Other real estate owned		$	7,298		—		—		7,298
	Impaired loans, net (¹)			8,866		—		—		8,866

	Total		$	16,164		—		—		16,164



	(¹)	Amount is net of a valuation allowance of $1.4 million at March 31, 2015 and $1.6 million at December 31, 2014 as required by ASC 310, “Receivables.”
Changes in Fair Value Due to Observable Factors	The table below includes a rollforward of the balance sheet amounts for the three months ended March 31, 2015 and 2014 (including the change in fair value) for financial instruments classified by the Company within Level 3 of the valuation hierarchy for assets and liabilities measured at fair value on a recurring basis. When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, since Level 3 financial instruments typically include, in addition to the unobservable or Level 3 components, observable components (that is, components that are actively quoted and can be validated to external sources), the gains and losses in the table below include changes in fair value due in part to observable factors that are part of the valuation methodology (in thousands):



			For the Three Months Ended March 31,
			2015				2014
			Other		Other		Other		Other
			Assets		Liabilities		Assets		Liabilities
	Fair value, January 1		$	17,331		—	$	11,390		—
	Total realized gains included in income			392		—		47		—
	Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at March 31			—		—		—		—
	Purchases, issuances and settlements, net			7,402		—		5,000		—
	Transfers out of Level 3			—		—		—		—

	Fair value, March 31		$	25,125		—	$	16,437		—

	Total realized gains included in income related to financial assets and liabilities still on the consolidated balance sheet at March 31		$	392		—	$	47		—

Carrying Value and Estimated Fair Value of Financial Instruments	The following table presents the carrying amounts, estimated fair value and placement in the fair valuation hierarchy of the Company’s financial instruments at March 31, 2015 and December 31, 2014. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as non-interest bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity.



	(in Thousands)		Carrying/		Estimated		Quoted Market		Models with		Models with
			Notional		Fair Value (¹)		Prices in		Significant		Significant
			Amount				an Active		Observable		Unobservable
							Market		Market		Market
							(Level 1)		Parameters		Parameters
									(Level 2)		(Level 3)
	March 31, 2015
	Financial assets:
	Securities held-to-maturity		$	28,154		28,389		—		28,389		—
	Loans, net			1,355,781		1,373,614		—		—		1,373,614
	Mortgage loans held-for-sale			11,983		11,983		—		—		11,983
	Financial liabilities:
	Deposits and securities sold under agreements to repurchase			1,704,954		1,581,942		—		—		1,581,942
	Off-balance sheet instruments:
	Commitments to extend credit			—		—		—		—		—
	Standby letters of credit			—		—		—		—		—
	December 31, 2014
	Financial assets:
	Securities held-to-maturity		$	28,123		28,400		—		28,400		—
	Loans, net			1,329,865		1,346,569		—		—		1,346,569
	Mortgage loans held-for-sale			9,466		9,466		—		—		9,466
	Financial liabilities:
	Deposits and securities sold under agreements to repurchase			1,663,707		1,530,607		—		—		1,530,607
	Off-balance sheet instruments:
	Commitments to extend credit			—		—		—		—		—
	Standby letters of credit			—		—		—		—		—


	(¹)	Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Minimum past due of loans for nonaccrual status	90 days
Loans with identified weakness and principal balance	$100,000
Loans with identified weakness and principal balance	500,000
Assignment of valuation allowance for specified amount of loan	$500,000

Loans_and_Allowance_for_Loan_L2

Loans and Allowance for Loan Losses - Schedule of Details on Loans of Company (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Mortgage Loans on real estate
Total mortgage loans on real estate	$1,299,439	$1,273,553
Commercial loans	30,357	30,000
Agricultural loans	1,559	1,670
Consumer installment loans
Total consumer installment loans	40,812	41,025
Other loans	10,615	10,530
Gross Loan and Leases Receivable	1,382,782	1,356,778
Net deferred loan fees	-4,503	-4,341
Total loans	1,378,279	1,352,437
Less: Allowance for loan losses	-22,498	-22,572	-22,935
Net Loans	1,355,781	1,329,865
Residential 1-4 Family [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	352,539	350,758
Consumer installment loans
Gross Loan and Leases Receivable	352,539	350,758
Less: Allowance for loan losses	-5,561	-5,582	-4,935
Multifamily [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	40,546	31,242
Consumer installment loans
Gross Loan and Leases Receivable	40,546	31,242
Less: Allowance for loan losses	-223	-172	-77
Commercial Real Estate [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	564,943	564,965
Consumer installment loans
Gross Loan and Leases Receivable	564,943	564,965
Less: Allowance for loan losses	-8,644	-9,578	-10,918
Construction [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	257,936	245,830
Consumer installment loans
Gross Loan and Leases Receivable	257,936	245,830
Less: Allowance for loan losses	-6,315	-5,578	-5,159
Farmland [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	30,879	30,236
Consumer installment loans
Gross Loan and Leases Receivable	30,879	30,236
Less: Allowance for loan losses	-710	-795	-618
Second Mortgages [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	8,868	9,026
Consumer installment loans
Gross Loan and Leases Receivable	8,868	9,026
Less: Allowance for loan losses	-93	-61	-205
Equity Lines of Credit [Member]
Mortgage Loans on real estate
Total mortgage loans on real estate	43,728	41,496
Consumer installment loans
Gross Loan and Leases Receivable	43,728	41,496
Less: Allowance for loan losses	-339	-304	-300
Personal [Member]
Consumer installment loans
Total consumer installment loans	37,825	37,745
Credit Cards [Member]
Consumer installment loans
Total consumer installment loans	$2,987	$3,280

Loans_and_Allowance_for_Loan_L3

Loans and Allowance for Loan Losses - Transactions in Allowance for Loan Losses (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Allowance for loan losses:
Beginning balance	$22,572	$22,935
Provision	75	498
Charge-offs	-254	-1,867
Recoveries	105	1,006
Ending balance	22,498	22,572
Ending balance individually evaluated for impairment	1,405	1,631
Ending balance collectively evaluated for impairment	21,093	20,941
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	1,382,782	1,356,778
Ending balance individually evaluated for impairment	12,200	10,497
Ending balance collectively evaluated for impairment	1,370,582	1,346,281
Ending balance loans acquired with deteriorated credit quality	0	0
Residential 1-4 Family [Member]
Allowance for loan losses:
Beginning balance	5,582	4,935
Provision	29	1,059
Charge-offs	-64	-468
Recoveries	14	56
Ending balance	5,561	5,582
Ending balance individually evaluated for impairment	243	376
Ending balance collectively evaluated for impairment	5,318	5,206
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	352,539	350,758
Ending balance individually evaluated for impairment	1,737	3,061
Ending balance collectively evaluated for impairment	350,802	347,697
Ending balance loans acquired with deteriorated credit quality	0	0
Multifamily [Member]
Allowance for loan losses:
Beginning balance	172	77
Provision	51	95
Ending balance	223	172
Ending balance collectively evaluated for impairment	223	172
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	40,546	31,242
Ending balance collectively evaluated for impairment	40,546	31,242
Ending balance loans acquired with deteriorated credit quality	0	0
Commercial Real Estate [Member]
Allowance for loan losses:
Beginning balance	9,578	10,918
Provision	-935	-378
Charge-offs		-968
Recoveries	1	6
Ending balance	8,644	9,578
Ending balance individually evaluated for impairment	1,110	1,135
Ending balance collectively evaluated for impairment	7,534	8,443
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	564,943	564,965
Ending balance individually evaluated for impairment	9,889	6,455
Ending balance collectively evaluated for impairment	555,054	558,510
Ending balance loans acquired with deteriorated credit quality	0	0
Construction [Member]
Allowance for loan losses:
Beginning balance	5,578	5,159
Provision	730	102
Charge-offs		-7
Recoveries	7	324
Ending balance	6,315	5,578
Ending balance collectively evaluated for impairment	6,315	5,578
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	257,936	245,830
Ending balance collectively evaluated for impairment	257,936	245,830
Ending balance loans acquired with deteriorated credit quality	0	0
Farmland [Member]
Allowance for loan losses:
Beginning balance	795	618
Provision	-85	176
Recoveries		1
Ending balance	710	795
Ending balance individually evaluated for impairment	52	120
Ending balance collectively evaluated for impairment	658	675
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	30,879	30,236
Ending balance individually evaluated for impairment	574	701
Ending balance collectively evaluated for impairment	30,305	29,535
Ending balance loans acquired with deteriorated credit quality	0	0
Second Mortgages [Member]
Allowance for loan losses:
Beginning balance	61	205
Provision	52	-164
Charge-offs	-20
Recoveries		20
Ending balance	93	61
Ending balance collectively evaluated for impairment	93	61
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	8,868	9,026
Ending balance individually evaluated for impairment		280
Ending balance collectively evaluated for impairment	8,868	8,746
Ending balance loans acquired with deteriorated credit quality	0	0
Equity Lines of Credit [Member]
Allowance for loan losses:
Beginning balance	304	300
Provision	35	3
Recoveries		1
Ending balance	339	304
Ending balance collectively evaluated for impairment	339	304
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	43,728	41,496
Ending balance collectively evaluated for impairment	43,728	41,496
Ending balance loans acquired with deteriorated credit quality	0	0
Commercial [Member]
Allowance for loan losses:
Beginning balance	176	395
Provision	76	-641
Charge-offs		-37
Recoveries	4	459
Ending balance	256	176
Ending balance collectively evaluated for impairment	256	176
Ending balance loans acquired with deteriorated credit quality	0	0
Loans:
Ending balance	30,357	30,000
Ending balance collectively evaluated for impairment	30,357	30,000
Ending balance loans acquired with deteriorated credit quality	0	0
Agricultural [Member]
Allowance for loan losses:
Beginning balance	326
Provision	122
Charge-offs	-170
Recoveries	79
Ending balance	357
Ending balance collectively evaluated for impairment	357
Ending balance loans acquired with deteriorated credit quality	0
Loans:
Ending balance	52,986
Ending balance collectively evaluated for impairment	52,986
Ending balance loans acquired with deteriorated credit quality	0
Agricultural, Installment and Other [Member]
Allowance for loan losses:
Beginning balance		328
Provision		246
Charge-offs		-387
Recoveries		139
Ending balance		326
Ending balance collectively evaluated for impairment		326
Ending balance loans acquired with deteriorated credit quality		0
Loans:
Ending balance	52,986	53,225
Ending balance collectively evaluated for impairment		53,225
Ending balance loans acquired with deteriorated credit quality		$0

Loans_and_Allowance_for_Loan_L4

Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Impaired loans, net	$4,694,000	$574,000
Consumer mortgage loans	718,000
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Potential problem loans	$35,600,000	$35,800,000

Loans_and_Allowance_for_Loan_L5

Loans and Allowance for Loan Losses - Company's Impaired Loans (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment	$12,289	$10,576
Unpaid Principal Balance	13,904	13,041
Related Allowance	1,405	1,631
Average Recorded Investment	11,434	17,660
Interest Income Recognized	79	482
With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,137	3,524
Unpaid Principal Balance	6,095	4,322
Average Recorded Investment	4,831	7,960
Interest Income Recognized	14	212
With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,152	7,052
Unpaid Principal Balance	7,809	8,719
Related Allowance	1,405	1,631
Average Recorded Investment	6,603	9,700
Interest Income Recognized	65	270
Residential 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,774	3,110
Unpaid Principal Balance	1,737	3,061
Related Allowance	243	376
Average Recorded Investment	2,442	2,444
Interest Income Recognized	27	175
Residential 1-4 Family [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,002	1,891
Unpaid Principal Balance	974	1,854
Average Recorded Investment	1,446	1,081
Interest Income Recognized	15	114
Residential 1-4 Family [Member] \| With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	772	1,219
Unpaid Principal Balance	763	1,207
Related Allowance	243	376
Average Recorded Investment	996	1,363
Interest Income Recognized	12	61
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	9,941	6,483
Unpaid Principal Balance	11,593	8,999
Related Allowance	1,110	1,135
Average Recorded Investment	8,213	11,739
Interest Income Recognized	52	297
Commercial Real Estate [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	5,135	1,352
Unpaid Principal Balance	5,121	2,188
Average Recorded Investment	3,244	5,984
Interest Income Recognized	-1	95
Commercial Real Estate [Member] \| With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,806	5,131
Unpaid Principal Balance	6,472	6,811
Related Allowance	1,110	1,135
Average Recorded Investment	4,969	5,755
Interest Income Recognized	53	202
Construction [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		2,488
Construction [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		673
Construction [Member] \| With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		1,815
Farmland [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	574	702
Unpaid Principal Balance	574	701
Related Allowance	52	120
Average Recorded Investment	638	767
Interest Income Recognized		7
Farmland [Member] \| With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	574	702
Unpaid Principal Balance	574	701
Related Allowance	52	120
Average Recorded Investment	638	767
Interest Income Recognized		7
Second Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment		281
Unpaid Principal Balance		280
Average Recorded Investment	141	222
Interest Income Recognized		3
Second Mortgages [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment		281
Unpaid Principal Balance		280
Average Recorded Investment	141	222
Interest Income Recognized		$3

Loans_and_Allowance_for_Loan_L6

Loans and Allowance for Loan Losses - Summary of Carrying Balances of TDRs (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Total TDRS	$7,873	$8,040
Performing Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Total TDRS	4,387	4,443
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Total TDRS	$3,486	$3,597

Loans_and_Allowance_for_Loan_L7

Loans and Allowance for Loan Losses - Troubled Debt Restructuring Categorized by Loan (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
	Contract	Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	10
Pre Modification Outstanding Recorded Investment	$2	$2,370
Post Modification Outstanding Recorded Investment, Net of Related Allowance	2	2,242
Residential 1-4 Family [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	6
Pre Modification Outstanding Recorded Investment		1,346
Post Modification Outstanding Recorded Investment, Net of Related Allowance		1,218
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		2
Pre Modification Outstanding Recorded Investment		1,020
Post Modification Outstanding Recorded Investment, Net of Related Allowance		1,020
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Pre Modification Outstanding Recorded Investment		3
Post Modification Outstanding Recorded Investment, Net of Related Allowance		3
Agricultural, Installment and Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1
Pre Modification Outstanding Recorded Investment	2	1
Post Modification Outstanding Recorded Investment, Net of Related Allowance	$2	$1

Loans_and_Allowance_for_Loan_L8

Loans and Allowance for Loan Losses - Summary of Loan Portfolio by Risk Rating (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Credit Risk Profile by Internally Assigned Rating
Total Loans	$1,382,782	$1,356,778
Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	1,347,135	1,320,970
Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	19,959	23,970
Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	15,688	11,838
Residential 1-4 Family [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	352,539	350,758
Residential 1-4 Family [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	342,965	339,529
Residential 1-4 Family [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	5,941	7,681
Residential 1-4 Family [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	3,633	3,548
Multifamily [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	40,546	31,242
Multifamily [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	40,546	31,242
Commercial Real Estate [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	564,943	564,965
Commercial Real Estate [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	541,373	545,301
Commercial Real Estate [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	13,160	13,313
Commercial Real Estate [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	10,410	6,351
Construction [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	257,936	245,830
Construction [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	257,547	243,416
Construction [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	338	2,362
Construction [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	51	52
Farmland [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	30,879	30,236
Farmland [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	29,935	29,260
Farmland [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	34	57
Farmland [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	910	919
Second Mortgages [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	8,868	9,026
Second Mortgages [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	8,023	8,007
Second Mortgages [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	274	347
Second Mortgages [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	571	672
Equity Lines of Credit [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	43,728	41,496
Equity Lines of Credit [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	43,535	41,274
Equity Lines of Credit [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	187	176
Equity Lines of Credit [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	6	46
Commercial [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	30,357	30,000
Commercial [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	30,337	29,893
Commercial [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	17	18
Commercial [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	3	89
Agricultural, Installment and Other [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	52,986	53,225
Agricultural, Installment and Other [Member] \| Pass [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	52,874	53,048
Agricultural, Installment and Other [Member] \| Special Mention [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	8	16
Agricultural, Installment and Other [Member] \| Substandard [Member]
Credit Risk Profile by Internally Assigned Rating
Total Loans	$104	$161

Debt_and_Equity_Securities_Sum

Debt and Equity Securities - Summary of Debt and Equity Securities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Summary Of Debt And Equity Securities [Line Items]
Available-for-sale, Amortized Cost	$335,801	$347,520
Available-for-sale, Gross Unrealized Gains	1,834	1,056
Available-for-sale, Gross Unrealized Losses	1,024	2,156
Available-for-sale, Estimated Market Value	336,611	346,420
Held-To-Maturity Securities, Amortized Cost	28,154	28,123
Held-To-Maturity Securities, Gross Unrealized Gains	392	465
Held-To-Maturity Securities, Gross Unrealized Losses	157	188
Held-To-Maturity Securities, Estimated Market Value	28,389	28,400
Government- Sponsored Enterprises (GSEs) Residential Mortgage Backed [Member]
Summary Of Debt And Equity Securities [Line Items]
Available-for-sale, Amortized Cost	165,971	170,802
Available-for-sale, Gross Unrealized Gains	1,132	731
Available-for-sale, Gross Unrealized Losses	234	464
Available-for-sale, Estimated Market Value	166,869	171,069
Held-To-Maturity Securities, Amortized Cost	7,351	7,398
Held-To-Maturity Securities, Gross Unrealized Gains	82	76
Held-To-Maturity Securities, Gross Unrealized Losses	113	147
Held-To-Maturity Securities, Estimated Market Value	7,320	7,327
Obligations of States and Political Subdivisions [Member]
Summary Of Debt And Equity Securities [Line Items]
Available-for-sale, Amortized Cost	13,957	14,324
Available-for-sale, Gross Unrealized Gains	84	98
Available-for-sale, Gross Unrealized Losses	117	158
Available-for-sale, Estimated Market Value	13,924	14,264
Held-To-Maturity Securities, Amortized Cost	20,803	20,725
Held-To-Maturity Securities, Gross Unrealized Gains	310	389
Held-To-Maturity Securities, Gross Unrealized Losses	44	41
Held-To-Maturity Securities, Estimated Market Value	21,069	21,073
US Government-Sponsored Enterprises (GSEs) [Member]
Summary Of Debt And Equity Securities [Line Items]
Available-for-sale, Amortized Cost	126,302	131,767
Available-for-sale, Gross Unrealized Gains	338	129
Available-for-sale, Gross Unrealized Losses	623	1,329
Available-for-sale, Estimated Market Value	126,017	130,567
SBAP [Member]
Summary Of Debt And Equity Securities [Line Items]
Available-for-sale, Amortized Cost	29,571	30,627
Available-for-sale, Gross Unrealized Gains	280	98
Available-for-sale, Gross Unrealized Losses	50	205
Available-for-sale, Estimated Market Value	$29,801	$30,520

Debt_and_Equity_Securities_Mat

Debt and Equity Securities - Maturity of Amortized Cost and Estimated Market Value of Debt Securities (Detail) (USD $)	Mar. 31, 2015	Mar. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Debt And Equity Securities [Abstract]
Available-for-sale securities, Due in one year or less, Estimated Market Value	$3,133
Available-for-sale securities, Due after one year through five years, Estimated Market Value	10,139
Available-for-sale securities, Due after five years through ten years, Estimated Market Value	3,741
Available-for-sale securities, Due after ten years, Estimated Market Value	11,141
Available-for-sale securities, Gross Estimated Market Value	28,154
Available-for-sale securities, Due in one year or less, Amortized Cost	3,165
Available-for-sale securities, Due after one year through five years, Amortized Cost	10,295
Available-for-sale securities, Due after five years through ten years, Amortized Cost	3,769
Available-for-sale securities, Due after ten years, Amortized Cost	11,160
Available-for-sale securities, Gross Amortized Cost	28,389
Held-to-maturity, Due in one year or less, Estimated Market Value		2,001
Held-to-maturity, Due after one year through five years, Estimated Market Value		59,146
Held-to-maturity, Due after five years through ten years, Estimated Market Value		148,273
Held-to-maturity, Due after ten years, Estimated Market Value		126,381
Held-to-maturity, Gross Estimated Market Value		335,801
Held-to-maturity, Due in one year or less, Amortized Cost	2,002
Held-to-maturity, Due after one year through five years, Amortized Cost	59,080
Held-to-maturity, Due after five years through ten years, Amortized Cost	148,496
Held-to-maturity, Due after ten years, Amortized Cost	127,033
Held-to-maturity, Gross Amortized Cost	$336,611

Debt_and_Equity_Securities_Gro

Debt and Equity Securities - Gross Unrealized Losses and Fair Value of Company's Investments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Security	Security
Held To Maturity Debt Securities [Line Items]
Held to Maturity Securities, Fair Value, Less than 12 Month	$7,723
Held to Maturity Securities, Unrealized losses, Less than 12 Month	31
Held to Maturity Securities, Number of securities included, Less than 12 Month	19
Held to Maturity Securities, Fair Value, 12 Month or More	3,903	7,251
Held to Maturity Securities, Unrealized losses, 12 Month or More	126	188
Held to Maturity Securities, Number of securities included, 12 Month or More	5	10
Held to Maturity Securities, Total Fair Value	11,626	7,251
Held to Maturity Securities, Total Unrealized Losses	157	188
Available-for-Sale Securities, Fair Value, Less than 12 Month	59,641	119,449
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	265	635
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	34	59
Available-for-Sale Securities, Fair Value, 12 Month or More	71,781	101,121
Available-for-Sale Securities, Unrealized Loss, 12 Month or More	759	1,521
Available-for-Sale Securities, Number of securities included, 12 Month or More	38	50
Available-for-Sale Securities, Total Fair Value	131,422	220,570
Available-for-Sale Securities, Total Unrealized Losses	1,024	2,156
US Government-Sponsored Enterprises (GSEs) [Member]
Held To Maturity Debt Securities [Line Items]
Available-for-Sale Securities, Fair Value, Less than 12 Month	17,898	34,753
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	37	143
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	5	10
Available-for-Sale Securities, Fair Value, 12 Month or More	57,853	74,250
Available-for-Sale Securities, Unrealized Loss, 12 Month or More	586	1,186
Available-for-Sale Securities, Number of securities included, 12 Month or More	18	24
Available-for-Sale Securities, Total Fair Value	75,751	109,003
Available-for-Sale Securities, Total Unrealized Losses	623	1,329
Government- Sponsored Enterprises (GSEs) Residential Mortgage Backed [Member]
Held To Maturity Debt Securities [Line Items]
Held to Maturity Securities, Fair Value, 12 Month or More	3,067	4,674
Held to Maturity Securities, Unrealized losses, 12 Month or More	113	147
Held to Maturity Securities, Number of securities included, 12 Month or More	3	4
Held to Maturity Securities, Total Fair Value	3,067	4,674
Held to Maturity Securities, Total Unrealized Losses	113	147
Available-for-Sale Securities, Fair Value, Less than 12 Month	34,835	66,504
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	169	279
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	22	36
Available-for-Sale Securities, Fair Value, 12 Month or More	9,486	22,172
Available-for-Sale Securities, Unrealized Loss, 12 Month or More	65	185
Available-for-Sale Securities, Number of securities included, 12 Month or More	8	13
Available-for-Sale Securities, Total Fair Value	44,321	88,676
Available-for-Sale Securities, Total Unrealized Losses	234	464
SBAP [Member]
Held To Maturity Debt Securities [Line Items]
Available-for-Sale Securities, Fair Value, Less than 12 Month	5,872	16,114
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	50	205
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	4	9
Available-for-Sale Securities, Total Fair Value	5,872	16,114
Available-for-Sale Securities, Total Unrealized Losses	50	205
Obligations of States and Political Subdivisions [Member]
Held To Maturity Debt Securities [Line Items]
Held to Maturity Securities, Fair Value, Less than 12 Month	7,723
Held to Maturity Securities, Unrealized losses, Less than 12 Month	31
Held to Maturity Securities, Number of securities included, Less than 12 Month	19
Held to Maturity Securities, Fair Value, 12 Month or More	836	2,577
Held to Maturity Securities, Unrealized losses, 12 Month or More	13	41
Held to Maturity Securities, Number of securities included, 12 Month or More	2	6
Held to Maturity Securities, Total Fair Value	8,559	2,577
Held to Maturity Securities, Total Unrealized Losses	44	41
Available-for-Sale Securities, Fair Value, Less than 12 Month	1,036	2,078
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	9	8
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	3	4
Available-for-Sale Securities, Fair Value, 12 Month or More	4,442	4,699
Available-for-Sale Securities, Unrealized Loss, 12 Month or More	108	150
Available-for-Sale Securities, Number of securities included, 12 Month or More	12	13
Available-for-Sale Securities, Total Fair Value	5,478	6,777
Available-for-Sale Securities, Total Unrealized Losses	$117	$158

Earnings_Per_Share_Summary_of_

Earnings Per Share - Summary of Components Comprising Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Basic EPS Computation:
Numerator - Earnings available to common Stockholders	$5,616	$4,172
Denominator - Weighted average number of common shares outstanding	7,597,396	7,522,280
Basic earnings per common share	$0.74	$0.55
Diluted EPS Computation:
Numerator - Earnings available to common Stockholders	$5,616	$4,172
Denominator - Weighted average number of common shares outstanding	7,597,396	7,522,280
Dilutive effect of stock options	3,385	4,356
Weighted average number of shares outstanding-diluted	7,600,781	7,526,636
Diluted earnings per common share	$0.74	$0.55

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$0
Accrued or recognized interest or penalties related to uncertain tax positions	$0

Commitments_and_Contingent_Lia2

Commitments and Contingent Liabilities - Additional information (Detail) (Standby Letters of Credit [Member])	3 Months Ended
	Mar. 31, 2015
Standby Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Standby letters of credit, terms	Two years or less

Commitments_and_Contingent_Lia3

Commitments and Contingent Liabilities - Total Contractual Amount for All Off-Balance Sheet Commitments (Detail) (USD $)	Mar. 31, 2015
Commitments to Extend Credit [Member]
Loss Contingencies [Line Items]
Contractual amount for off-balance sheet commitments	$325,328,000
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Contractual amount for off-balance sheet commitments	$32,318,000

Fair_Value_Measurements_Assets

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	$336,611	$346,420
US Government-Sponsored Enterprises (GSEs) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	126,017	130,567
Obligations of States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	13,924	14,264
Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	336,611	346,420
Other assets	25,125	17,331
Total assets at fair value	361,736	363,751
Fair Value Measurements Recurring [Member] \| Models with Significant Observable Market Parameters (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	336,611	346,420
Total assets at fair value	336,611	346,420
Fair Value Measurements Recurring [Member] \| Models with Significant Unobservable Market Parameters (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Other assets	25,125	17,331
Total assets at fair value	25,125	17,331
Fair Value Measurements Recurring [Member] \| US Government-Sponsored Enterprises (GSEs) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	126,017	130,567
Fair Value Measurements Recurring [Member] \| US Government-Sponsored Enterprises (GSEs) [Member] \| Models with Significant Observable Market Parameters (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	126,017	130,567
Fair Value Measurements Recurring [Member] \| Mortgage Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	166,869	171,069
Fair Value Measurements Recurring [Member] \| Mortgage Backed Securities [Member] \| Models with Significant Observable Market Parameters (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	166,869	171,069
Fair Value Measurements Recurring [Member] \| Asset-backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value		30,520
Fair Value Measurements Recurring [Member] \| Asset-backed Securities [Member] \| Models with Significant Observable Market Parameters (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value		30,520
Fair Value Measurements Recurring [Member] \| Obligations of States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	13,924	14,264
Fair Value Measurements Recurring [Member] \| Obligations of States and Political Subdivisions [Member] \| Models with Significant Observable Market Parameters (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities available-for-sale, Carrying Value	$13,924	$14,264

Fair_Value_Measurements_Assets1

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Detail) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Other real estate	$7,033		$7,298
Fair Value, Measurements, Nonrecurring [Member] \| Models with Significant Unobservable Market Parameters (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Other real estate	7,033		7,298
Impaired loans, net	10,795	[1]	8,866	[1]
Total	17,828		16,164
Fair Value, Measurements, Nonrecurring [Member] \| Reported Value Measurement [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Other real estate	7,033		7,298
Impaired loans, net	10,795	[1]	8,866	[1]
Total	$17,828		$16,164

[1]	Amount is net of a valuation allowance of $1.4 million at March 31, 2015 and $1.6 million at December 31, 2014 as required by ASC 310, "Receivables."

Fair_Value_Measurements_Assets2

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Parenthetical) (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Valuation allowance	$1,405	$1,631
Reported Value Measurement [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Valuation allowance	$1,400	$1,600

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
	TransferStation
Fair Value Disclosures [Abstract]
Transfers between levels one, two and three	0

Fair_Value_Measurements_Change

Fair Value Measurements - Changes in Fair Value Due to Observable Factors (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, Other Assets	$17,331	$11,390
Total realized gains included in income, Other Assets	392	47
Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held, Other Assets	0	0
Purchases, issuances and settlements, net, Other Assets	7,402	5,000
Transfers out of Level 3, Other Assets	0	0
Fair value, Other Assets	25,125	16,437
Fair value, Other Liabilities	0	0
Total realized gains included in income, Other Liabilities	0	0
Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held, Other Liabilities	0	0
Purchases, issuances and settlements, net, Other Liabilities	0	0
Transfers out of Level 3, Other Liabilities	0	0
Fair value, March 31, Other Liabilities	0	0
Other Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total realized gains included in income related to financial assets still on the consolidated balance sheet, Other Assets	$392	$47

Fair_Value_Measurements_Carryi

Fair Value Measurements - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held-to-maturity, Carrying/Notional Amount	$28,154	$28,123
Loans, net, Carrying/Notional Amount	1,355,781	1,329,865
Mortgage loans held-for-sale, Carrying/Notional Amount	11,983	9,466
Deposits and securities sold under agreements to repurchase, Carrying/Notional Amount	1,704,954	1,663,707
Commitments to extend credit, Carrying/Notional Amount	0	0
Standby letters of credit, Carrying/Notional Amount	0	0
Securities held-to-maturity	28,389	28,400
Loans, net, Estimated Fair Value	1,373,614	1,346,569
Mortgage loans held-for-sale	11,983	9,466
Deposits and securities sold under agreements to repurchase, Estimated Fair Value	1,581,942	1,530,607
Commitments to extend credit, Estimated Fair Value	0	0
Standby letters of credit, Estimated Fair Value	0	0
Quoted Market Prices in an Active Market (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commitments to extend credit, Estimated Fair Value	0	0
Standby letters of credit, Estimated Fair Value	0	0
Models with Significant Observable Market Parameters (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held-to-maturity	28,389	28,400
Commitments to extend credit, Estimated Fair Value	0	0
Standby letters of credit, Estimated Fair Value	0	0
Models with Significant Unobservable Market Parameters (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net, Estimated Fair Value	1,373,614	1,346,569
Mortgage loans held-for-sale	11,983	9,466
Deposits and securities sold under agreements to repurchase, Estimated Fair Value	1,581,942	1,530,607
Commitments to extend credit, Estimated Fair Value	0	0
Standby letters of credit, Estimated Fair Value	$0	$0