Wilson Bank Holding (WBHC) 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	8-May-14
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Entity Registrant Name	'WILSON BANK HOLDING CO	'
Entity Central Index Key	'0000885275	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	7,534,735

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Loans	$1,215,684	$1,207,202
Less: Allowance for loan losses	-23,325	-22,935
Net loans	1,192,359	1,184,267
Securities:	'	'
Held to maturity, at cost (market value $29,159 and $26,561, respectively)	29,283	26,823
Available-for-sale, at market (amortized cost $362,614 and $336,335, respectively)	357,572	329,373
Total securities	386,855	356,196
Loans held for sale	6,315	7,022
Restricted equity securities	3,012	3,012
Federal funds sold	50,110	38,190
Total earning assets	1,638,651	1,588,687
Cash and due from banks	71,860	73,314
Bank premises and equipment, net	39,098	38,176
Accrued interest receivable	5,358	5,063
Deferred income tax asset	11,343	11,437
Other real estate	11,522	12,869
Other assets	19,400	14,620
Goodwill	4,805	4,805
Total assets	1,802,037	1,748,971
Liabilities and Stockholders' Equity	'	'
Deposits	1,601,214	1,554,255
Securities sold under repurchase agreements	6,617	9,078
Accrued interest and other liabilities	11,821	7,967
Total liabilities	1,619,652	1,571,300
Stockholders' equity:	'	'
Common stock, $2.00 par value; authorized 15,000,000 shares, issued 7,534,347 and 7,498,588 shares, respectively	15,069	14,997
Additional paid-in capital	56,053	54,519
Retained earnings	114,374	112,451
Net unrealized gains on available-for-sale securities, net of income taxes of $1,931 and $2,666 respectively	-3,111	-4,296
Total stockholders' equity	182,385	177,671
Total liabilities and stockholders' equity	$1,802,037	$1,748,971

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Held-to-maturity, market value	$29,159	$26,561
Available-for-sale, amortized cost	362,614	336,335
Common stock, par value	$2	$2
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	7,534,347	7,498,588
Net unrealized gains on available-for-sale securities, income taxes	$1,931	$2,666

Consolidated_Statements_of_Ear

Consolidated Statements of Earnings (Unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Interest income:	'	'
Interest and fees on loans	$16,043	$16,464
Interest and dividends on securities:	'	'
Taxable securities	1,600	1,059
Exempt from Federal income taxes	164	146
Interest on loans held for sale	51	71
Interest on Federal funds sold	46	44
Interest and dividends on restricted securities	30	36
Total interest income	17,934	17,820
Interest expense:	'	'
Interest on negotiable order of withdrawal accounts	391	396
Interest on money market and savings accounts	600	594
Interest on certificates of deposit	1,508	1,850
Interest on securities sold under repurchase agreements	9	13
Total interest expense	2,508	2,853
Net interest income before provision for loan losses	15,426	14,967
Provision for loan losses	249	669
Net interest income after provision for loan losses	15,177	14,298
Non-interest income:	'	'
Service charges on deposit accounts	916	940
Other fees and commissions	1,947	1,780
Gain on sale of loans	501	822
Total non-interest income	3,364	3,542
Non-interest expense:	'	'
Salaries and employee benefits	6,707	6,051
Occupancy expenses, net	696	618
Furniture and equipment expense	406	307
Data processing expense	578	408
Directors' fees	182	202
Litigation expense	24	2,500
Other operating expenses	2,860	2,642
Write downs and loss on sale of other real estate, net	160	248
Loss on sale of other assets	4	2
Total non-interest expense	11,617	12,978
Earnings before income taxes	6,924	4,862
Income taxes	2,752	1,884
Net earnings	$4,172	$2,978
Weighted average number of shares outstanding-basic	7,522,280	7,445,701
Weighted average number of shares outstanding-diluted	7,526,636	7,450,543
Basic earnings per common share	$0.55	$0.40
Diluted earnings per common share	$0.55	$0.40
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, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'
Net earnings	$4,172	$2,978
Other comprehensive earnings (losses), net of tax:	'	'
Unrealized gains (losses) on available-for-sale securities arising during period, net of income taxes of $735 and $706, respectively	1,185	-1,136
Other comprehensive earnings (losses)	1,185	-1,136
Comprehensive earnings	$5,357	$1,842

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Earnings (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'
Unrealized gains on available-for-sale securities arising during period, net of taxes	$735	$706

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Cash flows from operating activities:	'	'	'
Interest received	$18,161	$18,750	'
Fees and commissions received	2,863	2,720	'
Proceeds from sale of loans held for sale	19,670	30,358	'
Origination of loans held for sale	-18,462	-20,857	'
Interest paid	-2,757	-3,327	'
Cash paid to suppliers and employees	-9,226	-7,414	'
Income taxes paid	-784	-1,058	'
Net cash provided by operating activities	9,465	19,172	'
Cash flows from investing activities:	'	'	'
Proceeds from maturities, calls, and principal payments of held-to-maturity securities	152	1,133	'
Proceeds from maturities, calls, and principal payments of available-for-sale securities	21,278	28,607	'
Purchase of held-to-maturity securities	-2,665	-3,314	'
Purchase of available-for-sale securities	-48,026	-18,545	'
Loans made to customers, net of repayments	-8,675	-25,584	'
Purchase of Bank owned life insurance	-5,000	'	'
Purchase of premises and equipment	-1,426	-463	'
Proceeds from sale of other real estate	1,521	986	'
Proceeds from sale of other assets	'	2	'
Net cash used in investing activities	-42,841	-17,178	'
Cash flows from financing activities:	'	'	'
Net increase in non-interest bearing, savings and NOW deposit accounts	53,089	36,046	'
Net decrease in time deposits	-6,130	-14,612	'
Net decrease in securities sold under repurchase agreements	-2,461	-1,308	'
Dividends paid	-2,250	-2,226	'
Proceeds from sale of common stock pursuant to dividend reinvestment	1,607	1,620	'
Repurchase of common stock	-94	'	'
Proceeds from exercise of stock options	81	78	'
Net cash provided by financing activities	43,842	19,598	'
Net increase in cash and cash equivalents	10,466	21,592	'
Cash and cash equivalents at beginning of period	111,504	106,664	106,664
Cash and cash equivalents at end of period	121,970	128,256	111,504
Reconciliation of net earnings to net cash provided by operating activities:	'	'	'
Net earnings	4,172	2,978	'
Adjustments to reconcile net earnings to net cash provided by operating activities:	'	'	'
Depreciation, amortization, and accretion	1,026	1,413	'
Provision for loan losses	249	669	2,177
Loss on sale of other real estate	160	248	'
Loss on sale of other assets	4	2	'
Stock option compensation	13	8	'
Decrease in taxes payable	2,609	826	'
Decrease in loans held for sale	707	8,679	'
Increase in deferred tax assets	-641	'	'
Decrease in other assets, net	216	481	'
Increase in interest receivable	-295	-94	'
Increase in other liabilities	1,494	4,436	'
Decrease in interest payable	-249	-474	'
Total adjustments	5,293	16,194	'
Net cash provided by operating activities	9,465	19,172	'
Supplemental schedule of non-cash activities:	'	'	'
Unrealized loss in values of securities available-for-sale, net of taxes of $735 and $706 for the three months ended March 31, 2014 and 2013, respectively	1,185	-1,136	'
Non-cash transfers from loans to other real estate	388	1,196	'
Non-cash transfers from other real estate to loans	54	606	'
Non-cash transfers from loans to other assets	'	'	'

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement Of Cash Flows [Abstract]	'	'
Unrealized loss in values of securities available-for-sale, net of taxes	$735	$706

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
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, and Smith 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 2013 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, 2013. 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, 2013.
	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, 2013 and at March 31, 2014, 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. 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 $100,000, 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 $100,000.
	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, 2014.
	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
	Mar. 31, 2014
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, 2014 and December 31, 2013:
			(In Thousands)
			March 31,			December 31,
			2014			2013
	Mortgage Loans on real estate
	Residential 1-4 family		$	332,452		$	332,432
	Multifamily			17,946			13,920
	Commercial			519,203			526,258
	Construction and land development			203,808			194,426
	Farmland			27,132			22,771
	Second mortgages			10,780			10,511
	Equity lines of credit			35,645			34,185
	Total mortgage loans on real estate			1,146,966			1,134,503
	Commercial loans			28,179			29,444
	Agricultural loans			2,193			2,099
	Consumer installment loans
	Personal			35,629			37,789
	Credit cards			2,959			3,329
	Total consumer installment loans			38,588			41,118
	Other loans			3,079			3,291
				1,219,005			1,210,455
	Net deferred loan fees			(3,321	)		(3,253	)
	Total loans			1,215,684			1,207,202
	Less: Allowance for loan losses			(23,325	)		(22,935	)
	Net Loans		$	1,192,359		$	1,184,267
	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, 2014 and year ended December 31, 2013 are summarized as follows:
			(In Thousands)
			Residential						Commercial									Second			Equity Lines									Installment
			1-4 Family			Multifamily			Real Estate			Construction			Farmland			Mortgages			of Credit			Commercial			Agricultural			and Other			Total
	March 31, 2014
	Allowance for loan losses:
	Beginning balance		$	4,935			77			10,918			5,159			618			205			300			395			7			321			22,935
	Provision			1,239			(6	)		(1,468	)		843			184			(58	)		(73	)		(383	)		(4	)		(25	)		249
	Charge-offs			(218	)		—			(94	)		—			—			—			—			(15	)		—			(42	)		(369	)
	Recoveries			19			—			2			29			—			2			—			428			1			29			510
	Ending balance		$	5,975			71			9,358			6,031			802			149			227			425			4			283			23,325
	Ending balance individually evaluated for impairment		$	665			—			1,360			950			263			—			—			—			—			—			3,238
	Ending balance collectively evaluated for impairment		$	5,310			71			7,998			5,081			539			149			227			425			4			283			20,087
	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—			—			—			—			—
	Loans:
	Ending balance		$	332,452			17,946			519,203			203,808			27,132			10,780			35,645			28,179			2,193			41,667			1,219,005
	Ending balance individually evaluated for impairment		$	2,195			—			12,736			4,290			830			606			—			—			—			—			20,657
	Ending balance collectively evaluated for impairment		$	330,257			17,946			506,467			199,518			26,302			10,174			35.645			28,179			2,193			41,667			1,198,348
	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—			—			—			—			—
			(In Thousands)
			Residential						Commercial									Second			Equity Lines									Installment
			1-4 Family			Multifamily			Real Estate			Construction			Farmland			Mortgages			of Credit			Commercial			Agricultural			and Other			Total
	December 31, 2013
	Allowance for loan losses:
	Beginning balance		$	5,699			89			9,305			7,191			1,658			272			492			382			15			394			25,497
	Provision			36			(12	)		3,063			(741	)		(266	)		(70	)		(89	)		131			(14	)		139			2,177
	Charge-offs			(877	)		—			(1,478	)		(1,470	)		(781	)		(7	)		(104	)		(149	)		(1	)		(380	)		(5,247	)
	Recoveries			77			—			28			179			7			10			1			31			7			168			508
	Ending balance		$	4,935			77			10,918			5,159			618			205			300			395			7			321			22,935
	Ending balance individually evaluated for impairment		$	1,150			—			2,300			950			57			49			10			—			—			—			4,516
	Ending balance collectively evaluated for impairment		$	3,785			77			8,618			4,209			561			156			290			395			7			321			18,419
	Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—			—			—			—			—
	Loans:
	Ending balance		$	332,432			13,920			526,258			194,426			22,771			10,511			34,185			29,444			2,099			44,409			1,210,455
	Ending balance individually evaluated for impairment		$	4,303			—			17,722			3,806			130			761			174			—			—			—			26,896
Ending balance collectively evaluated for impairment		$	328,129			13,920			508,536			190,620			22,641			9,750			34,011			29,444			2,099			44,409			1,183,559
Ending balance loans acquired with deteriorated credit quality		$	—			—			—			—			—			—			—			—			—			—			—
Impaired Loans
At March 31, 2014, the Company had certain impaired loans of $4,989,000 which were on non-accruing interest status. At December 31, 2013, the Company had certain impaired loans of $4,718,000 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, 2014 and December 31, 2013.
		In Thousands
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
		Investment			Balance			Allowance			Investment			Recognized
March 31, 2014
With no related allowance recorded:
Residential 1-4 family		$	550			543			—			454			8
Multifamily			—			—			—			—			—
Commercial real estate			7,134			7,086			—			7,184			108
Construction			1,880			1,877			—			1,637			3
Farmland			—			—			—			—			—
Second mortgages			606			606			—			606			—
Equity lines of credit			—			—			—			—			—
Commercial			—			—			—			—			—
Agricultural			—			—			—			—			—
		$	10,170			10,112			—			9,881			119
With allowance recorded:
Residential 1-4 family		$	1,661			1,887			665			2,817			11
Multifamily			—			—			—			—			—
Commercial real estate			5,674			7,353			1,360			8,132			61
Construction			2,413			2,413			950			2,413			—
Farmland			831			830			263			481			2
Second mortgages			—			—			—			78			—
Equity lines of credit			—			—			—			87			—
Commercial			—			—			—			—			—
Agricultural			—			—			—			—			—
		$	10,579			12,483			3,238			14,008			74
Total
Residential 1-4 family		$	2,211			2,430			665			3,271			19
Multifamily			—			—			—			—			—
Commercial real estate			12,808			14,439			1,360			15,316			169
Construction			4,293			4,290			950			4,050			3
Farmland			831			830			263			481			2
Second mortgages			606			606			—			684			—
Equity lines of credit			—			—			—			87			—
Commercial			—			—			—			—			—
Agricultural			—			—			—			—			—
		$	20,749			22,595			3,238			23,889			193
		In Thousands
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
		Investment			Balance			Allowance			Investment			Recognized
December 31, 2013
With no related allowance recorded:
Residential 1-4 family		$	357			404			—			2,947			16
Multifamily			—			—			—			—			—
Commercial real estate			7,234			7,199			—			3,750			260
Construction			1,393			1,393			—			2,265			11
Farmland			—			—			—			—			—
Second mortgages			606			606			—			665			—
Equity lines of credit			—			—			—			—			—
Commercial			—			—			—			52			—
Agricultural			—			—			—			—			—
		$	9,590			9,602			—			9,679			287
With allowance recorded:
Residential 1-4 family		$	3,972			4,186			1,150			5,107			187
Multifamily			—			—			—			—			—
Commercial real estate			10,589			12,226			2,300			11,834			264
Construction			2,413			2,413			950			5,859			—
Farmland			131			131			57			1,818			8
Second mortgages			156			155			49			157			—
Equity lines of credit			174			174			10			175			9
Commercial			—			—			—			—			—
Agricultural			—			—			—			—			—
		$	17,435			19,285			4,516			24,950			468
Total
Residential 1-4 family		$	4,329			4,590			1,150			8,054			203
Multifamily			—			—			—			—			—
Commercial real estate			17,823			19,425			2,300			15,584			524
Construction			3,806			3,806			950			8,124			11
Farmland			131			131			57			1,818			8
Second mortgages			762			761			49			822			—
Equity lines of credit			174			174			10			175			9
Commercial			—			—			—			52			—
Agricultural			—			—			—			—			—
		$	27,025			28,887			4,516			34,629			755
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 periodically may agree to modify the contractual terms of loans. When a loan is modified and a concession is made to a borrower experiencing financial difficulty, the modification is considered a troubled debt restructuring. Such concessions may include a reduction of an interest rate to a below market rate, taking into account the credit quality of the borrower, a significant reduction or deferral of payments of principal and/or interest or an extension of the maturity date. All troubled debt restructurings are initially classified as impaired.
The following table outlines the amount of each troubled debt restructuring categorized by loan classification for the three months ended March 31, 2014 and the year ended December 31, 2013:
		March 31, 2014									December 31, 2013
								Post									Post
								Modification									Modification
					Pre			Outstanding						Pre			Outstanding
					Modification			Recorded						Modification			Recorded
		Number			Outstanding			Investment,			Number			Outstanding			Investment,
		of			Recorded			Net of Related			of			Recorded			Net of Related
		Contracts			Investment			Allowance			Contracts			Investment			Allowance
Residential 1-4 family			1		$	139		$	139			6		$	800		$	800
Multifamily			—			—			—			—			—			—
Commercial real estate			—			—			—			2			5,522			3,291
Construction			—			—			—			1			282			282
Farmland			—			—			—			—			—			—
Second mortgages			—			—			—			1			24			24
Equity lines of credit			—			—			—			—			—			—
Commercial			—			—			—			—			—			—
Agricultural, installment and other			—			—			—			2			13			13
Total			1		$	139		$	139			12		$	6,641		$	4,410
As of March 31, 2014 and December 31, 2013, 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, 2014, the Company’s recorded investment in consumer mortgage loans in the process of foreclosure amounted to $721,000.
Potential problem loans, which include nonperforming loans, amounted to approximately $37.2 million at March 31, 2014 compared to $38.0 million at December 31, 2013. 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:
		(In Thousands)
		Residential			Multifamily			Commercial			Construction			Farmland			Second			Equity			Commercial			Agricultural			Installment			Total
		1-4 Family						Real Estate									Mortgages			Lines									and Other
																				of Credit
March 31, 2014
Credit Risk Profile by Internally Assigned Rating
Pass		$	320,486			17,946			501,313			199,697			25,990			9,595			35,401			27,707			2,190			41,446			1,181,771
Special Mention			8,866			—			5,246			339			62			475			174			355			3			34			15,554
Substandard			3,100			—			12,644			3,772			1,080			710			70			117			—			187			21,680
Doubtful			—			—			—			—			—			—			—			—			—			—			—
Total		$	332,452			17,946			519,203			203,808			27,132			10,780			35,645			28,179			2,193			41,667			1,219,005
December 31, 2013
Credit Risk Profile by Internally Assigned Rating
Pass		$	319,762			13,920			507,769			190,083			22,324			9,135			33,964			29,298			2,089			44,159			1,172,503
Special Mention			9,460			—			5,308			367			64			665			174			26			3			43			16,110
Substandard			3,210			—			13,181			3,976			383			711			47			120			7			207			21,842
Doubtful			—			—			—			—			—			—			—			—			—			—			—
Total		$	332,432			13,920			526,258			194,426			22,771			10,511			34,185			29,444			2,099			44,409			1,210,455

Debt_and_Equity_Securities

Debt and Equity Securities	3 Months Ended
	Mar. 31, 2014
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, 2014 and December 31, 2013 are summarized as follows:
			March 31, 2014
			Securities Available-For-Sale
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	U.S. Government-sponsored enterprises (GSEs)* and agency-backed securities		$	154,909	$	18	$	4,203	$	150,724
	Mortgage-backed:
	GSE residential			194,011		729		1,346		193,394
	Obligations of states and political subdivisions			13,694		88		328		13,454
			$	362,614	$	835	$	5,877	$	357,572
			March 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		$	8,603	$	82	$	431	$	8,254
	Obligations of states and political subdivisions			20,680		425		200		20,905
			$	29,283	$	507	$	631	$	29,159
			December 31, 2013
			Securities Available-For-Sale
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	U.S. Government-sponsored enterprises (GSEs)* and agency-backed securities		$	146,769	$	10	$	5,961	$	140,818
	Mortgage-backed:
	GSE residential			175,855		808		1,481		175,182
	Obligations of states and political subdivisions			13,711		71		409		13,373
			$	336,335	$	889	$	7,851	$	329,373
			December 31, 2013
			Securities Held-To-Maturity
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	8,649	$	73	$	520	$	8,202
	Obligations of states and political subdivisions			18,174		424		239		18,359
			$	26,823	$	497	$	759	$	26,561
	*	Such as Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks, Federal Farm Credit Banks, Government National Mortgage Association and Small Business Administration.
	The amortized cost and estimated market value of debt securities at March 31, 2014, 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
			Amortized		Estimated		Amortized		Estimated
			Cost		Market		Cost		Market
					Value				Value
	Due in one year or less		$	673	$	673	$	4,416	$	4,436
	Due after one year through five years			9,526		9,817		42,199		41,693
	Due after five years through ten years			5,704		5,769		222,460		218,564
	Due after ten years			13,380		12,900		93,539		92,879
			$	29,283	$	29,159	$	362,614	$	357,572
	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, 2014 and December 31, 2013.
			In Thousands, Except Number of Securities
			Less than 12 Months						12 Months or More						Total
	March 31, 2014		Fair		Unrealized		Number		Fair		Unrealized		Number		Fair		Unrealized
			Value		Losses		of		Value		Losses		of		Value		Losses
							Securities						Securities
							Included						Included
Held to Maturity Securities:
Mortgage-backed:
Government-sponsored enterprises (GSEs)* residential		$	6,730	$	431		5	$	—	$	—		—	$	6,730	$	431
Obligations of states and political subdivisions			4,326		169		12		2,070		31		6		6,396		200
		$	11,056	$	600		17	$	2,070	$	31		6	$	13,126	$	631
Available-for-Sale Securities:
US Government-Sponsored enterprises (GSEs) and agency-backed securities*		$	105,018	$	2,512		37	$	32,379	$	1,691		11	$	137,397	$	4,203
Mortgage-backed:
Government-sponsored enterprises (GSEs)* residential			116,226		1,319		41		1,795		27		2		118,021		1,346
Obligations of states and political subdivisions			4,110		53		9		4,799		275		14		8,909		328
		$	225,354	$	3,884		87	$	38,973	$	1,993		27	$	264,327	$	5,877
		In Thousands, Except Number of Securities
		Less than 12 Months						12 Months or More						Total
December 31, 2013		Fair		Unrealized		Number		Fair		Unrealized		Number		Fair		Unrealized
		Value		Losses		of		Value		Losses		of		Value		Losses
						Securities						Securities
						Included						Included
Held to Maturity Securities:
Mortgage-backed:
Government-sponsored enterprises (GSEs)* residential		$	6,678	$	520		5	$	—	$	—		—	$	6,678	$	520
Obligations of states and political subdivisions			7,817		231		21		343		8		2		8,160		239
		$	14,495	$	751		26	$	343	$	8		2	$	14,838	$	759
Available-for-Sale Securities:
U.S. Government - Sponsored enterprises (GSEs)		$	108,234	$	4,358		37	$	19,479	$	1,603		7	$	127,713	$	5,961
Mortgage-backed:
Government-sponsored Enterprises (GSEs)* residential			97,805		1,449		32		1,866		32		2		99,671		1,481
Obligations of states and political subdivisions			5,645		95		14		4,766		314		14		10,411		409
		$	211,684	$	5,902		83	$	26,111	$	1,949		23	$	237,795	$	7,851
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, 2014.
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
	Mar. 31, 2014
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, 2014 and 2013:
		2014		2013
		(Dollars in Thousands
		Except Per Share Amounts)
	Basic EPS Computation:
	Numerator – Earnings available to common Stockholders	$	4,172	$	2,978
	Denominator – Weighted average number of common shares outstanding		7,522,280		7,445,701
	Basic earnings per common share	$	0.55	$	0.4
	Diluted EPS Computation:
	Numerator – Earnings available to common Stockholders	$	4,172	$	2,978
	Denominator – Weighted average number of common shares outstanding		7,522,280		7,445,701
	Dilutive effect of stock options		4,356		4,842
			7,526,636		7,450,543
	Diluted earnings per common share	$	0.55	$	0.4

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
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, 2014, 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, 2014.
	As of March 31, 2014, 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, 2011 through 2013 and the IRS for the years ended December 31, 2011 through 2013.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2014
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, 2014 is as follows:
	Commitments to extend credit	$	225,404,000
	Standby letters of credit	$	27,529,000
	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, 2014 will not have a material impact on the Company’s financial statements.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
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 noninterest expense along with holding costs. Any gains or losses realized at the time of disposal are also reflected in noninterest 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, 2014 and December 31, 2013, 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-14
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	150,724		—		150,724		—
	Mortgage-backed securities			193,394		—		193,394		—
	State and municipal securities			13,454		—		13,454		—
	Total investment securities available-for-sale			357,572		—		357,572		—
	Other assets			16,437		—		—		16,437
	Total assets at fair value		$	374,009		—		357,572		16,437
	December 31, 2013
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	140,818		—		140,818		—
	Mortgage-backed securities			175,182		—		175,182		—
	State and municipal securities			13,373		—		13,373		—
	Total investment securities available-for-sale			329,373		—		329,373		—
	Other assets			11,390		—		—		11,390
	Total assets at fair value		$	340,763		—		329,373		11,390
	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, 2014
	Other real estate owned		$	11,522		—		—		11,522
	Impaired loans, net (¹)			17,419		—		—		17,419
	Total		$	28,941		—		—		28,941
	December 31, 2013
	Other real estate owned		$	12,869		—		—		12,869
	Impaired loans, net (¹)			22,380		—		—		22,380
	Total		$	35,249		—		—		35,249
	(¹)	Amount is net of a valuation allowance of $3.2 million at March 31, 2014 and $4.5 million at December 31, 2013 as required by ASC 310-10, “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, 2014, 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, 2014 and 2013 (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,
			2014				2013
			Other		Other		Other		Other
			Assets		Liabilities		Assets		Liabilities
	Fair value, January 1		$	11,390		—		6,315		—
	Total realized gains included in income			47		—		23		—
	Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at March 31			—		—		—		—
	Purchases, issuances and settlements, net			5,000		—		—		—
Transfers out of Level 3			—		—		—		—
Fair value, March 31		$	16,437		—		6,338		—
Total realized gains included in income related to financial assets and liabilities still on the consolidated balance sheet at March 31		$	—		—		—		—
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, 2014 and December 31, 2013. 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, 2014 and December 31, 2013. 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 noninterest 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		Models with		Models with
		Notional		Fair Value		Market		Significant		Significant
		Amount		(¹)		Prices in		Observable		Unobservable
						an Active		Market		Market
						Market		Parameters		Parameters
						(Level 1)		(Level 2)		(Level 3)
March 31, 2014
Financial assets:
Securities held-to-maturity		$	29,283		29,159		—		29,159		—
Loans, net			1,192,359		1,197,806		—		—		1,197,806
Mortgage loans held-for-sale			6,315		6,315		—		—		6,315
Financial liabilities:
Deposits and securities sold under agreements to repurchase			1,607,831		1,453,877		—		—		1,453,877
Off-balance sheet instruments:
Commitments to extend credit			—		—		—		—		—
Standby letters of credit			—		—		—		—		—
December 31, 2013
Financial assets:
Securities held-to-maturity		$	26,823		26,561		—		26,561		—
Loans, net			1,184,267		1,185,271		—		—		1,185,271
Mortgage loans held-for-sale			7,022		7,022		—		—		7,022
Financial liabilities:
Deposits and securities sold under agreements to repurchase			1,563,333		1,554,839		—		—		1,554,839
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
	Mar. 31, 2014
Income Tax Disclosure [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, and Smith 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 2013 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	'
	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, 2013. 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, 2013.
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, 2013 and at March 31, 2014, 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. 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 $100,000, 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 $100,000.
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, 2014.
	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, 2014, 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, 2014.
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
	Mar. 31, 2014
Receivables [Abstract]	'
Schedule of Details on Loans of Company	'
	The following schedule details the loans of the Company at March 31, 2014 and December 31, 2013:
		(In Thousands)
		March 31,			December 31,
		2014			2013
	Mortgage Loans on real estate
	Residential 1-4 family	$	332,452		$	332,432
	Multifamily		17,946			13,920
	Commercial		519,203			526,258
	Construction and land development		203,808			194,426
	Farmland		27,132			22,771
	Second mortgages		10,780			10,511
	Equity lines of credit		35,645			34,185
	Total mortgage loans on real estate		1,146,966			1,134,503
	Commercial loans		28,179			29,444
	Agricultural loans		2,193			2,099
	Consumer installment loans
	Personal		35,629			37,789
	Credit cards		2,959			3,329
	Total consumer installment loans		38,588			41,118
	Other loans		3,079			3,291
			1,219,005			1,210,455
	Net deferred loan fees		(3,321	)		(3,253	)
	Total loans		1,215,684			1,207,202
	Less: Allowance for loan losses		(23,325	)		(22,935	)
	Net Loans	$	1,192,359		$	1,184,267
Transactions in Allowance for Loan Losses	'
	Transactions in the allowance for loan losses for the three months ended March 31, 2014 and year ended December 31, 2013 are summarized as follows:
		(In Thousands)
		Residential						Commercial									Second			Equity Lines									Installment
		1-4 Family			Multifamily			Real Estate			Construction			Farmland			Mortgages			of Credit			Commercial			Agricultural			and Other			Total
	March 31, 2014
	Allowance for loan losses:
	Beginning balance	$	4,935			77			10,918			5,159			618			205			300			395			7			321			22,935
	Provision		1,239			(6	)		(1,468	)		843			184			(58	)		(73	)		(383	)		(4	)		(25	)		249
	Charge-offs		(218	)		—			(94	)		—			—			—			—			(15	)		—			(42	)		(369	)
	Recoveries		19			—			2			29			—			2			—			428			1			29			510
	Ending balance	$	5,975			71			9,358			6,031			802			149			227			425			4			283			23,325
	Ending balance individually evaluated for impairment	$	665			—			1,360			950			263			—			—			—			—			—			3,238
	Ending balance collectively evaluated for impairment	$	5,310			71			7,998			5,081			539			149			227			425			4			283			20,087
	Ending balance loans acquired with deteriorated credit quality	$	—			—			—			—			—			—			—			—			—			—			—
	Loans:
	Ending balance	$	332,452			17,946			519,203			203,808			27,132			10,780			35,645			28,179			2,193			41,667			1,219,005
	Ending balance individually evaluated for impairment	$	2,195			—			12,736			4,290			830			606			—			—			—			—			20,657
	Ending balance collectively evaluated for impairment	$	330,257			17,946			506,467			199,518			26,302			10,174			35.645			28,179			2,193			41,667			1,198,348
	Ending balance loans acquired with deteriorated credit quality	$	—			—			—			—			—			—			—			—			—			—			—
		(In Thousands)
		Residential						Commercial									Second			Equity Lines									Installment
		1-4 Family			Multifamily			Real Estate			Construction			Farmland			Mortgages			of Credit			Commercial			Agricultural			and Other			Total
	December 31, 2013
	Allowance for loan losses:
	Beginning balance	$	5,699			89			9,305			7,191			1,658			272			492			382			15			394			25,497
	Provision		36			(12	)		3,063			(741	)		(266	)		(70	)		(89	)		131			(14	)		139			2,177
	Charge-offs		(877	)		—			(1,478	)		(1,470	)		(781	)		(7	)		(104	)		(149	)		(1	)		(380	)		(5,247	)
	Recoveries		77			—			28			179			7			10			1			31			7			168			508
	Ending balance	$	4,935			77			10,918			5,159			618			205			300			395			7			321			22,935
	Ending balance individually evaluated for impairment	$	1,150			—			2,300			950			57			49			10			—			—			—			4,516
	Ending balance collectively evaluated for impairment	$	3,785			77			8,618			4,209			561			156			290			395			7			321			18,419
	Ending balance loans acquired with deteriorated credit quality	$	—			—			—			—			—			—			—			—			—			—			—
	Loans:
	Ending balance	$	332,432			13,920			526,258			194,426			22,771			10,511			34,185			29,444			2,099			44,409			1,210,455
	Ending balance individually evaluated for impairment	$	4,303			—			17,722			3,806			130			761			174			—			—			—			26,896
	Ending balance collectively evaluated for impairment	$	328,129			13,920			508,536			190,620			22,641			9,750			34,011			29,444			2,099			44,409			1,183,559
	Ending balance loans acquired with deteriorated credit quality	$	—			—			—			—			—			—			—			—			—			—			—
Company's Impaired Loans	'
	The following table presents the Company’s impaired loans at March 31, 2014 and December 31, 2013.
		In Thousands
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
		Investment			Balance			Allowance			Investment			Recognized
	March 31, 2014
	With no related allowance recorded:
	Residential 1-4 family	$	550			543			—			454			8
	Multifamily		—			—			—			—			—
	Commercial real estate		7,134			7,086			—			7,184			108
	Construction		1,880			1,877			—			1,637			3
	Farmland		—			—			—			—			—
	Second mortgages		606			606			—			606			—
	Equity lines of credit		—			—			—			—			—
	Commercial		—			—			—			—			—
	Agricultural		—			—			—			—			—
		$	10,170			10,112			—			9,881			119
	With allowance recorded:
	Residential 1-4 family	$	1,661			1,887			665			2,817			11
	Multifamily		—			—			—			—			—
	Commercial real estate		5,674			7,353			1,360			8,132			61
	Construction		2,413			2,413			950			2,413			—
	Farmland		831			830			263			481			2
	Second mortgages		—			—			—			78			—
	Equity lines of credit		—			—			—			87			—
	Commercial		—			—			—			—			—
	Agricultural		—			—			—			—			—
		$	10,579			12,483			3,238			14,008			74
	Total
	Residential 1-4 family	$	2,211			2,430			665			3,271			19
	Multifamily		—			—			—			—			—
	Commercial real estate		12,808			14,439			1,360			15,316			169
	Construction		4,293			4,290			950			4,050			3
	Farmland		831			830			263			481			2
	Second mortgages		606			606			—			684			—
	Equity lines of credit		—			—			—			87			—
	Commercial		—			—			—			—			—
	Agricultural		—			—			—			—			—
		$	20,749			22,595			3,238			23,889			193
		In Thousands
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
		Investment			Balance			Allowance			Investment			Recognized
	December 31, 2013
	With no related allowance recorded:
	Residential 1-4 family	$	357			404			—			2,947			16
	Multifamily		—			—			—			—			—
	Commercial real estate		7,234			7,199			—			3,750			260
	Construction		1,393			1,393			—			2,265			11
	Farmland		—			—			—			—			—
	Second mortgages		606			606			—			665			—
	Equity lines of credit		—			—			—			—			—
	Commercial		—			—			—			52			—
	Agricultural		—			—			—			—			—
		$	9,590			9,602			—			9,679			287
	With allowance recorded:
	Residential 1-4 family	$	3,972			4,186			1,150			5,107			187
	Multifamily		—			—			—			—			—
	Commercial real estate		10,589			12,226			2,300			11,834			264
	Construction		2,413			2,413			950			5,859			—
	Farmland		131			131			57			1,818			8
	Second mortgages		156			155			49			157			—
	Equity lines of credit		174			174			10			175			9
Commercial		—			—			—			—			—
Agricultural		—			—			—			—			—
	$	17,435			19,285			4,516			24,950			468
Total
Residential 1-4 family	$	4,329			4,590			1,150			8,054			203
Multifamily		—			—			—			—			—
Commercial real estate		17,823			19,425			2,300			15,584			524
Construction		3,806			3,806			950			8,124			11
Farmland		131			131			57			1,818			8
Second mortgages		762			761			49			822			—
Equity lines of credit		174			174			10			175			9
Commercial		—			—			—			52			—
Agricultural		—			—			—			—			—
	$	27,025			28,887			4,516			34,629			755
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, 2014 and the year ended December 31, 2013:
		March 31, 2014									December 31, 2013
								Post									Post
								Modification									Modification
					Pre			Outstanding						Pre			Outstanding
					Modification			Recorded						Modification			Recorded
		Number			Outstanding			Investment,			Number			Outstanding			Investment,
		of			Recorded			Net of Related			of			Recorded			Net of Related
		Contracts			Investment			Allowance			Contracts			Investment			Allowance
	Residential 1-4 family		1		$	139		$	139			6		$	800		$	800
	Multifamily		—			—			—			—			—			—
	Commercial real estate		—			—			—			2			5,522			3,291
	Construction		—			—			—			1			282			282
	Farmland		—			—			—			—			—			—
	Second mortgages		—			—			—			1			24			24
	Equity lines of credit		—			—			—			—			—			—
	Commercial		—			—			—			—			—			—
	Agricultural, installment and other		—			—			—			2			13			13
	Total		1		$	139		$	139			12		$	6,641		$	4,410
Summary of Loan Portfolio by Risk Rating	'
	The following table is a summary of the Bank’s loan portfolio by risk rating:
		(In Thousands)
		Residential			Multifamily			Commercial			Construction			Farmland			Second			Equity			Commercial			Agricultural			Installment			Total
		1-4 Family						Real Estate									Mortgages			Lines									and Other
																				of Credit
	March 31, 2014
	Credit Risk Profile by Internally Assigned Rating
	Pass	$	320,486			17,946			501,313			199,697			25,990			9,595			35,401			27,707			2,190			41,446			1,181,771
	Special Mention		8,866			—			5,246			339			62			475			174			355			3			34			15,554
	Substandard		3,100			—			12,644			3,772			1,080			710			70			117			—			187			21,680
	Doubtful		—			—			—			—			—			—			—			—			—			—			—
	Total	$	332,452			17,946			519,203			203,808			27,132			10,780			35,645			28,179			2,193			41,667			1,219,005
	December 31, 2013
	Credit Risk Profile by Internally Assigned Rating
	Pass	$	319,762			13,920			507,769			190,083			22,324			9,135			33,964			29,298			2,089			44,159			1,172,503
	Special Mention		9,460			—			5,308			367			64			665			174			26			3			43			16,110
	Substandard		3,210			—			13,181			3,976			383			711			47			120			7			207			21,842
	Doubtful		—			—			—			—			—			—			—			—			—			—			—
	Total	$	332,432			13,920			526,258			194,426			22,771			10,511			34,185			29,444			2,099			44,409			1,210,455

Debt_and_Equity_Securities_Tab

Debt and Equity Securities (Tables)	3 Months Ended
	Mar. 31, 2014
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, 2014 and December 31, 2013 are summarized as follows:
			March 31, 2014
			Securities Available-For-Sale
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	U.S. Government-sponsored enterprises (GSEs)* and agency-backed securities		$	154,909	$	18	$	4,203	$	150,724
	Mortgage-backed:
	GSE residential			194,011		729		1,346		193,394
	Obligations of states and political subdivisions			13,694		88		328		13,454
			$	362,614	$	835	$	5,877	$	357,572
			March 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		$	8,603	$	82	$	431	$	8,254
	Obligations of states and political subdivisions			20,680		425		200		20,905
			$	29,283	$	507	$	631	$	29,159
			December 31, 2013
			Securities Available-For-Sale
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	U.S. Government-sponsored enterprises (GSEs)* and agency-backed securities		$	146,769	$	10	$	5,961	$	140,818
	Mortgage-backed:
	GSE residential			175,855		808		1,481		175,182
	Obligations of states and political subdivisions			13,711		71		409		13,373
			$	336,335	$	889	$	7,851	$	329,373
			December 31, 2013
			Securities Held-To-Maturity
			In Thousands
			Amortized		Gross		Gross		Estimated
			Cost		Unrealized		Unrealized		Market
					Gains		Losses		Value
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	8,649	$	73	$	520	$	8,202
	Obligations of states and political subdivisions			18,174		424		239		18,359
			$	26,823	$	497	$	759	$	26,561
	*	Such as Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks, Federal Farm Credit Banks, Government National Mortgage Association and Small Business Administration.
Maturity of Amortized Cost and Estimated Market Value of Debt Securities	'
	The amortized cost and estimated market value of debt securities at March 31, 2014, 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
			Amortized		Estimated		Amortized		Estimated
			Cost		Market		Cost		Market
					Value				Value
	Due in one year or less		$	673	$	673	$	4,416	$	4,436
	Due after one year through five years			9,526		9,817		42,199		41,693
	Due after five years through ten years			5,704		5,769		222,460		218,564
	Due after ten years			13,380		12,900		93,539		92,879
			$	29,283	$	29,159	$	362,614	$	357,572
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, 2014 and December 31, 2013.
			In Thousands, Except Number of Securities
			Less than 12 Months						12 Months or More						Total
	March 31, 2014		Fair		Unrealized		Number		Fair		Unrealized		Number		Fair		Unrealized
			Value		Losses		of		Value		Losses		of		Value		Losses
							Securities						Securities
							Included						Included
	Held to Maturity Securities:
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	6,730	$	431		5	$	—	$	—		—	$	6,730	$	431
	Obligations of states and political subdivisions			4,326		169		12		2,070		31		6		6,396		200
			$	11,056	$	600		17	$	2,070	$	31		6	$	13,126	$	631
	Available-for-Sale Securities:
	US Government-Sponsored enterprises (GSEs) and agency-backed securities*		$	105,018	$	2,512		37	$	32,379	$	1,691		11	$	137,397	$	4,203
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential			116,226		1,319		41		1,795		27		2		118,021		1,346
	Obligations of states and political subdivisions			4,110		53		9		4,799		275		14		8,909		328
			$	225,354	$	3,884		87	$	38,973	$	1,993		27	$	264,327	$	5,877
			In Thousands, Except Number of Securities
			Less than 12 Months						12 Months or More						Total
	December 31, 2013		Fair		Unrealized		Number		Fair		Unrealized		Number		Fair		Unrealized
			Value		Losses		of		Value		Losses		of		Value		Losses
							Securities						Securities
							Included						Included
	Held to Maturity Securities:
	Mortgage-backed:
	Government-sponsored enterprises (GSEs)* residential		$	6,678	$	520		5	$	—	$	—		—	$	6,678	$	520
	Obligations of states and political subdivisions			7,817		231		21		343		8		2		8,160		239
			$	14,495	$	751		26	$	343	$	8		2	$	14,838	$	759
	Available-for-Sale Securities:
	U.S. Government - Sponsored enterprises (GSEs)		$	108,234	$	4,358		37	$	19,479	$	1,603		7	$	127,713	$	5,961
	Mortgage-backed:
	Government-sponsored Enterprises (GSEs)* residential			97,805		1,449		32		1,866		32		2		99,671		1,481
	Obligations of states and political subdivisions			5,645		95		14		4,766		314		14		10,411		409
			$	211,684	$	5,902		83	$	26,111	$	1,949		23	$	237,795	$	7,851

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
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, 2014 and 2013:
		2014		2013
		(Dollars in Thousands
		Except Per Share Amounts)
	Basic EPS Computation:
	Numerator – Earnings available to common Stockholders	$	4,172	$	2,978
	Denominator – Weighted average number of common shares outstanding		7,522,280		7,445,701
	Basic earnings per common share	$	0.55	$	0.4
	Diluted EPS Computation:
	Numerator – Earnings available to common Stockholders	$	4,172	$	2,978
	Denominator – Weighted average number of common shares outstanding		7,522,280		7,445,701
	Dilutive effect of stock options		4,356		4,842
			7,526,636		7,450,543
	Diluted earnings per common share	$	0.55	$	0.4

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
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, 2014 is as follows:
	Commitments to extend credit	$	225,404,000
	Standby letters of credit	$	27,529,000

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
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, 2014 and December 31, 2013, 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-14
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	150,724		—		150,724		—
	Mortgage-backed securities			193,394		—		193,394		—
	State and municipal securities			13,454		—		13,454		—
	Total investment securities available-for-sale			357,572		—		357,572		—
	Other assets			16,437		—		—		16,437
	Total assets at fair value		$	374,009		—		357,572		16,437
	December 31, 2013
	Investment securities available-for-sale:
	U.S. Government sponsored enterprises		$	140,818		—		140,818		—
	Mortgage-backed securities			175,182		—		175,182		—
	State and municipal securities			13,373		—		13,373		—
	Total investment securities available-for-sale			329,373		—		329,373		—
	Other assets			11,390		—		—		11,390
	Total assets at fair value		$	340,763		—		329,373		11,390
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, 2014
	Other real estate owned		$	11,522		—		—		11,522
	Impaired loans, net (¹)			17,419		—		—		17,419
	Total		$	28,941		—		—		28,941
	December 31, 2013
	Other real estate owned		$	12,869		—		—		12,869
	Impaired loans, net (¹)			22,380		—		—		22,380
	Total		$	35,249		—		—		35,249
	(¹)	Amount is net of a valuation allowance of $3.2 million at March 31, 2014 and $4.5 million at December 31, 2013 as required by ASC 310-10, “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, 2014 and 2013 (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,
			2014				2013
			Other		Other		Other		Other
			Assets		Liabilities		Assets		Liabilities
	Fair value, January 1		$	11,390		—		6,315		—
	Total realized gains included in income			47		—		23		—
	Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at March 31			—		—		—		—
	Purchases, issuances and settlements, net			5,000		—		—		—
	Transfers out of Level 3			—		—		—		—
	Fair value, March 31		$	16,437		—		6,338		—
	Total realized gains included in income related to financial assets and liabilities still on the consolidated balance sheet at March 31		$	—		—		—		—
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, 2014 and December 31, 2013. 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 noninterest 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		Models with		Models with
			Notional		Fair Value		Market		Significant		Significant
			Amount		(¹)		Prices in		Observable		Unobservable
							an Active		Market		Market
							Market		Parameters		Parameters
							(Level 1)		(Level 2)		(Level 3)
	March 31, 2014
	Financial assets:
	Securities held-to-maturity		$	29,283		29,159		—		29,159		—
	Loans, net			1,192,359		1,197,806		—		—		1,197,806
	Mortgage loans held-for-sale			6,315		6,315		—		—		6,315
	Financial liabilities:
	Deposits and securities sold under agreements to repurchase			1,607,831		1,453,877		—		—		1,453,877
	Off-balance sheet instruments:
	Commitments to extend credit			—		—		—		—		—
	Standby letters of credit			—		—		—		—		—
	December 31, 2013
	Financial assets:
	Securities held-to-maturity		$	26,823		26,561		—		26,561		—
	Loans, net			1,184,267		1,185,271		—		—		1,185,271
	Mortgage loans held-for-sale			7,022		7,022		—		—		7,022
	Financial liabilities:
	Deposits and securities sold under agreements to repurchase			1,563,333		1,554,839		—		—		1,554,839
	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, 2014
Accounting Policies [Abstract]	'
Minimum past due of loans for nonaccrual status	'90 days
Loans with identified weakness and principal balance	$100,000
Assignment of valuation allowance for specified amount of loan	$100,000

Loans_and_Allowance_for_Loan_L2

Loans and Allowance for Loan Losses - Schedule of Details on Loans of Company (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	$1,146,966	$1,134,503	'
Commercial loans	28,179	29,444	'
Agricultural loans	2,193	2,099	'
Consumer installment loans:	'	'	'
Total consumer installment loans	38,588	41,118	'
Other loans	3,079	3,291	'
Gross Loan and Leases Receivable	1,219,005	1,210,455	'
Net deferred loan fees	-3,321	-3,253	'
Total loans	1,215,684	1,207,202	'
Less: Allowance for loan losses	-23,325	-22,935	-25,497
Net Loans	1,192,359	1,184,267	'
Residential 1-4 Family [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	332,452	332,432	'
Consumer installment loans:	'	'	'
Gross Loan and Leases Receivable	332,452	332,432	'
Less: Allowance for loan losses	-5,975	-4,935	-5,699
Multifamily [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	17,946	13,920	'
Consumer installment loans:	'	'	'
Gross Loan and Leases Receivable	17,946	13,920	'
Less: Allowance for loan losses	-71	-77	-89
Commercial Real Estate [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	519,203	526,258	'
Construction and Land Development [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	203,808	194,426	'
Farmland [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	27,132	22,771	'
Consumer installment loans:	'	'	'
Gross Loan and Leases Receivable	27,132	22,771	'
Less: Allowance for loan losses	-802	-618	-1,658
Equity Lines of Credit [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	35,645	34,185	'
Consumer installment loans:	'	'	'
Gross Loan and Leases Receivable	35,645	34,185	'
Less: Allowance for loan losses	-227	-300	-492
Personal [Member]	'	'	'
Consumer installment loans:	'	'	'
Total consumer installment loans	35,629	37,789	'
Credit Cards [Member]	'	'	'
Consumer installment loans:	'	'	'
Total consumer installment loans	2,959	3,329	'
Second Mortgages [Member]	'	'	'
Mortgage Loans on real estate	'	'	'
Total mortgage loans on real estate	10,780	10,511	'
Consumer installment loans:	'	'	'
Gross Loan and Leases Receivable	10,780	10,511	'
Less: Allowance for loan losses	($149)	($205)	($272)

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, 2014	Mar. 31, 2013	Dec. 31, 2013
Allowance for loan losses:	'	'	'
Beginning balance	$22,935	$25,497	$25,497
Provision	249	669	2,177
Charge-offs	-369	'	-5,247
Recoveries	510	'	508
Ending balance	23,325	'	22,935
Ending balance individually evaluated for impairment	3,238	'	4,516
Ending balance collectively evaluated for impairment	20,087	'	18,419
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	1,219,005	'	1,210,455
Ending balance individually evaluated for impairment	20,657	'	26,896
Ending balance collectively evaluated for impairment	1,198,348	'	1,183,559
Ending balance loans acquired with deteriorated credit quality	'	'	'
Commercial Real Estate [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	10,918	9,305	9,305
Provision	-1,468	'	3,063
Charge-offs	-94	'	-1,478
Recoveries	2	'	28
Ending balance	9,358	'	10,918
Ending balance individually evaluated for impairment	1,360	'	2,300
Ending balance collectively evaluated for impairment	7,998	'	8,618
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	519,203	'	526,258
Ending balance individually evaluated for impairment	12,736	'	17,722
Ending balance collectively evaluated for impairment	506,467	'	508,536
Ending balance loans acquired with deteriorated credit quality	'	'	'
Second Mortgages [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	205	272	272
Provision	-58	'	-70
Charge-offs	'	'	-7
Recoveries	2	'	10
Ending balance	149	'	205
Ending balance individually evaluated for impairment	'	'	49
Ending balance collectively evaluated for impairment	149	'	156
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	10,780	'	10,511
Ending balance individually evaluated for impairment	606	'	761
Ending balance collectively evaluated for impairment	10,174	'	9,750
Ending balance loans acquired with deteriorated credit quality	'	'	'
Residential 1-4 Family [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	4,935	5,699	5,699
Provision	1,239	'	36
Charge-offs	-218	'	-877
Recoveries	19	'	77
Ending balance	5,975	'	4,935
Ending balance individually evaluated for impairment	665	'	1,150
Ending balance collectively evaluated for impairment	5,310	'	3,785
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	332,452	'	332,432
Ending balance individually evaluated for impairment	2,195	'	4,303
Ending balance collectively evaluated for impairment	330,257	'	328,129
Ending balance loans acquired with deteriorated credit quality	'	'	'
Multifamily [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	77	89	89
Provision	-6	'	-12
Charge-offs	'	'	'
Recoveries	'	'	'
Ending balance	71	'	77
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	71	'	77
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	17,946	'	13,920
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	17,946	'	13,920
Ending balance loans acquired with deteriorated credit quality	'	'	'
Construction [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	5,159	7,191	7,191
Provision	843	'	-741
Charge-offs	'	'	-1,470
Recoveries	29	'	179
Ending balance	6,031	'	5,159
Ending balance individually evaluated for impairment	950	'	950
Ending balance collectively evaluated for impairment	5,081	'	4,209
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	203,808	'	194,426
Ending balance individually evaluated for impairment	4,290	'	3,806
Ending balance collectively evaluated for impairment	199,518	'	190,620
Ending balance loans acquired with deteriorated credit quality	'	'	'
Farmland [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	618	1,658	1,658
Provision	184	'	-266
Charge-offs	'	'	-781
Recoveries	'	'	7
Ending balance	802	'	618
Ending balance individually evaluated for impairment	263	'	57
Ending balance collectively evaluated for impairment	539	'	561
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	27,132	'	22,771
Ending balance individually evaluated for impairment	830	'	130
Ending balance collectively evaluated for impairment	26,302	'	22,641
Ending balance loans acquired with deteriorated credit quality	'	'	'
Equity Lines of Credit [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	300	492	492
Provision	-73	'	-89
Charge-offs	'	'	-104
Recoveries	'	'	1
Ending balance	227	'	300
Ending balance individually evaluated for impairment	'	'	10
Ending balance collectively evaluated for impairment	227	'	290
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	35,645	'	34,185
Ending balance individually evaluated for impairment	'	'	174
Ending balance collectively evaluated for impairment	35,645	'	34,011
Ending balance loans acquired with deteriorated credit quality	'	'	'
Commercial [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	395	382	382
Provision	-383	'	131
Charge-offs	-15	'	-149
Recoveries	428	'	31
Ending balance	425	'	395
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	425	'	395
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	28,179	'	29,444
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	28,179	'	29,444
Ending balance loans acquired with deteriorated credit quality	'	'	'
Agricultural [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	7	15	15
Provision	-4	'	-14
Charge-offs	'	'	-1
Recoveries	1	'	7
Ending balance	4	'	7
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	4	'	7
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	2,193	'	2,099
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	2,193	'	2,099
Ending balance loans acquired with deteriorated credit quality	'	'	'
Installment and Other [Member]	'	'	'
Allowance for loan losses:	'	'	'
Beginning balance	321	394	394
Provision	-25	'	139
Charge-offs	-42	'	-380
Recoveries	29	'	168
Ending balance	283	'	321
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	283	'	321
Ending balance loans acquired with deteriorated credit quality	'	'	'
Loans:	'	'	'
Ending balance	41,667	'	44,409
Ending balance individually evaluated for impairment	'	'	'
Ending balance collectively evaluated for impairment	41,667	'	44,409
Ending balance loans acquired with deteriorated credit quality	'	'	'

Loans_and_Allowance_for_Loan_L4

Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]	'	'
Impaired loans, net	$4,989,000	$4,718,000
Consumer mortgage loans	721,000,000	'
Nonperforming Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Potential problem loans	$37,200,000	$38,000,000

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, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	$20,749	$27,025
Unpaid Principal Balance	22,595	28,887
Related Allowance	3,238	4,516
Average Recorded Investment	23,889	34,629
Interest Income Recognized	193	755
With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	10,170	9,590
Unpaid Principal Balance	10,112	9,602
Related Allowance	'	'
Average Recorded Investment	9,881	9,679
Interest Income Recognized	119	287
With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	10,579	17,435
Unpaid Principal Balance	12,483	19,285
Related Allowance	3,238	4,516
Average Recorded Investment	14,008	24,950
Interest Income Recognized	74	468
Residential 1-4 Family [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	2,211	4,329
Unpaid Principal Balance	2,430	4,590
Related Allowance	665	1,150
Average Recorded Investment	3,271	8,054
Interest Income Recognized	19	203
Residential 1-4 Family [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	550	357
Unpaid Principal Balance	543	404
Related Allowance	'	'
Average Recorded Investment	454	2,947
Interest Income Recognized	8	16
Residential 1-4 Family [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	1,661	3,972
Unpaid Principal Balance	1,887	4,186
Related Allowance	665	1,150
Average Recorded Investment	2,817	5,107
Interest Income Recognized	11	187
Multifamily [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Multifamily [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Multifamily [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Construction [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	4,293	3,806
Unpaid Principal Balance	4,290	3,806
Related Allowance	950	950
Average Recorded Investment	4,050	8,124
Interest Income Recognized	3	11
Construction [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	1,880	1,393
Unpaid Principal Balance	1,877	1,393
Related Allowance	'	'
Average Recorded Investment	1,637	2,265
Interest Income Recognized	3	11
Construction [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	2,413	2,413
Unpaid Principal Balance	2,413	2,413
Related Allowance	950	950
Average Recorded Investment	2,413	5,859
Interest Income Recognized	'	'
Farmland [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	831	131
Unpaid Principal Balance	830	131
Related Allowance	263	57
Average Recorded Investment	481	1,818
Interest Income Recognized	2	8
Farmland [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Farmland [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	831	131
Unpaid Principal Balance	830	131
Related Allowance	263	57
Average Recorded Investment	481	1,818
Interest Income Recognized	2	8
Equity Lines of Credit [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	174
Unpaid Principal Balance	'	174
Related Allowance	'	10
Average Recorded Investment	87	175
Interest Income Recognized	'	9
Equity Lines of Credit [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Equity Lines of Credit [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	174
Unpaid Principal Balance	'	174
Related Allowance	'	10
Average Recorded Investment	87	175
Interest Income Recognized	'	9
Commercial [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	52
Interest Income Recognized	'	'
Commercial [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	52
Interest Income Recognized	'	'
Commercial [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Agricultural [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Agricultural [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Agricultural [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	'
Unpaid Principal Balance	'	'
Related Allowance	'	'
Average Recorded Investment	'	'
Interest Income Recognized	'	'
Commercial Real Estate [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	12,808	17,823
Unpaid Principal Balance	14,439	19,425
Related Allowance	1,360	2,300
Average Recorded Investment	15,316	15,584
Interest Income Recognized	169	524
Commercial Real Estate [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	7,134	7,234
Unpaid Principal Balance	7,086	7,199
Related Allowance	'	'
Average Recorded Investment	7,184	3,750
Interest Income Recognized	108	260
Commercial Real Estate [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	5,674	10,589
Unpaid Principal Balance	7,353	12,226
Related Allowance	1,360	2,300
Average Recorded Investment	8,132	11,834
Interest Income Recognized	61	264
Second Mortgages [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	606	762
Unpaid Principal Balance	606	761
Related Allowance	'	49
Average Recorded Investment	684	822
Interest Income Recognized	'	'
Second Mortgages [Member] | With No Related Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	606	606
Unpaid Principal Balance	606	606
Related Allowance	'	'
Average Recorded Investment	606	665
Interest Income Recognized	'	'
Second Mortgages [Member] | With Allowance Recorded [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Recorded Investment	'	156
Unpaid Principal Balance	'	155
Related Allowance	'	49
Average Recorded Investment	78	157
Interest Income Recognized	'	'

Loans_and_Allowance_for_Loan_L6

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, 2014	Dec. 31, 2013
	Contract	Contract
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	12
Pre Modification Outstanding Recorded Investment	$139	$6,641
Post Modification Outstanding Recorded Investment, Net of Related Allowance	139	4,410
Residential 1-4 Family [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	6
Pre Modification Outstanding Recorded Investment	139	800
Post Modification Outstanding Recorded Investment, Net of Related Allowance	139	800
Multifamily [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Pre Modification Outstanding Recorded Investment	'	'
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	'
Construction [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	1
Pre Modification Outstanding Recorded Investment	'	282
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	282
Farmland [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Pre Modification Outstanding Recorded Investment	'	'
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	'
Equity Lines of Credit [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Pre Modification Outstanding Recorded Investment	'	'
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	'
Commercial [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Pre Modification Outstanding Recorded Investment	'	'
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	'
Agricultural Installment and Other [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	2
Pre Modification Outstanding Recorded Investment	'	13
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	13
Commercial Real Estate [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	2
Pre Modification Outstanding Recorded Investment	'	5,522
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	3,291
Second Mortgages [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	1
Pre Modification Outstanding Recorded Investment	'	24
Post Modification Outstanding Recorded Investment, Net of Related Allowance	'	$24

Loans_and_Allowance_for_Loan_L7

Loans and Allowance for Loan Losses - Summary of Loan Portfolio by Risk Rating (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	$1,219,005	$1,210,455
Commercial Real Estate [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	519,203	526,258
Second Mortgages [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	10,780	10,511
Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	1,181,771	1,172,503
Pass [Member] | Commercial Real Estate [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	501,313	507,769
Pass [Member] | Second Mortgages [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	9,595	9,135
Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	15,554	16,110
Special Mention [Member] | Commercial Real Estate [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	5,246	5,308
Special Mention [Member] | Second Mortgages [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	475	665
Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	21,680	21,842
Substandard [Member] | Commercial Real Estate [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	12,644	13,181
Substandard [Member] | Second Mortgages [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	710	711
Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Doubtful [Member] | Commercial Real Estate [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Doubtful [Member] | Second Mortgages [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Residential 1-4 Family [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	332,452	332,432
Residential 1-4 Family [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	320,486	319,762
Residential 1-4 Family [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	8,866	9,460
Residential 1-4 Family [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	3,100	3,210
Residential 1-4 Family [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Multifamily [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	17,946	13,920
Multifamily [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	17,946	13,920
Multifamily [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Multifamily [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Multifamily [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Construction [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	203,808	194,426
Construction [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	199,697	190,083
Construction [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	339	367
Construction [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	3,772	3,976
Construction [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Farmland [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	27,132	22,771
Farmland [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	25,990	22,324
Farmland [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	62	64
Farmland [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	1,080	383
Farmland [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Equity Lines of Credit [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	35,645	34,185
Equity Lines of Credit [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	35,401	33,964
Equity Lines of Credit [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	174	174
Equity Lines of Credit [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	70	47
Equity Lines of Credit [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Commercial [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	28,179	29,444
Commercial [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	27,707	29,298
Commercial [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	355	26
Commercial [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	117	120
Commercial [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Agricultural [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	2,193	2,099
Agricultural [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	2,190	2,089
Agricultural [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	3	3
Agricultural [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	7
Agricultural [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'
Installment and Other [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	41,667	44,409
Installment and Other [Member] | Pass [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	41,446	44,159
Installment and Other [Member] | Special Mention [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	34	43
Installment and Other [Member] | Substandard [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	187	207
Installment and Other [Member] | Doubtful [Member]	'	'
Credit Risk Profile by Internally Assigned Rating	'	'
Total Loans	'	'

Debt_and_Equity_Securities_Sum

Debt and Equity Securities - Summary of Debt and Equity Securities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary Of Debt And Equity Securities [Line Items]	'	'
Available-for-sale, amortized cost	$362,614	$336,335
Available-for-sale, Gross Unrealized Gains	835	889
Available-for-sale, Gross Unrealized Losses	5,877	7,851
Available-for-sale, Estimated Market Value	357,572	329,373
Held-To-Maturity Securities, Amortized Cost	29,283	26,823
Held-To-Maturity Securities, Gross Unrealized Gains	507	497
Held-To-Maturity Securities, Gross Unrealized Losses	631	759
Held-To-Maturity Securities, Estimated Market Value	29,159	26,561
Government- sponsored enterprises (GSEs) residential Mortgage Backed [Member]	'	'
Summary Of Debt And Equity Securities [Line Items]	'	'
Available-for-sale, amortized cost	194,011	175,855
Available-for-sale, Gross Unrealized Gains	729	808
Available-for-sale, Gross Unrealized Losses	1,346	1,481
Available-for-sale, Estimated Market Value	193,394	175,182
Held-To-Maturity Securities, Amortized Cost	8,603	8,649
Held-To-Maturity Securities, Gross Unrealized Gains	82	73
Held-To-Maturity Securities, Gross Unrealized Losses	431	520
Held-To-Maturity Securities, Estimated Market Value	8,254	8,202
Obligations of States and Political Subdivisions [Member]	'	'
Summary Of Debt And Equity Securities [Line Items]	'	'
Available-for-sale, amortized cost	13,694	13,711
Available-for-sale, Gross Unrealized Gains	88	71
Available-for-sale, Gross Unrealized Losses	328	409
Available-for-sale, Estimated Market Value	13,454	13,373
Held-To-Maturity Securities, Amortized Cost	20,680	18,174
Held-To-Maturity Securities, Gross Unrealized Gains	425	424
Held-To-Maturity Securities, Gross Unrealized Losses	200	239
Held-To-Maturity Securities, Estimated Market Value	20,905	18,359
US Government-Sponsored Enterprises (GSEs) and agency-backed securities [Member]	'	'
Summary Of Debt And Equity Securities [Line Items]	'	'
Available-for-sale, amortized cost	154,909	146,769
Available-for-sale, Gross Unrealized Gains	18	10
Available-for-sale, Gross Unrealized Losses	4,203	5,961
Available-for-sale, Estimated Market Value	$150,724	$140,818

Debt_and_Equity_Securities_Mat

Debt and Equity Securities - Maturity of Amortized Cost and Estimated Market Value of Debt Securities (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt And Equity Securities [Abstract]	'	'
Held-to-maturity, Due in one year or less, Amortized Cost	$673	'
Held-to-maturity, Due after one year through five years, Amortized Cost	9,526	'
Held-to-maturity, Due after five years through ten years, Amortized Cost	5,704	'
Held-to-maturity, Due after ten years, Amortized Cost	13,380	'
Held-to-maturity, Gross Amortized Cost	29,283	26,823
Held-to-maturity, Due in one year or less, Estimated Market Value	673	'
Held-to-maturity, Due after one year through five years, Estimated Market Value	9,817	'
Held-to-maturity, Due after five years through ten years, Estimated Market Value	5,769	'
Held-to-maturity, Due after ten years, Estimated Market Value	12,900	'
Held-to-maturity, Gross Estimated Market Value	29,159	'
Available-for-sale securities, Due in one year or less, Amortized Cost	4,416	'
Available-for-sale securities, Due after one year through five years, Amortized Cost	42,199	'
Available-for-sale securities, Due after five years through ten years, Amortized Cost	222,460	'
Available-for-sale securities, Due after ten years, Amortized Cost	93,539	'
Available-for-sale securities, Gross Amortized Cost	362,614	'
Available-for-sale securities, Due in one year or less, Estimated Market Value	4,436	'
Available-for-sale securities, Due after one year through five years, Estimated Market Value	41,693	'
Available-for-sale securities, Due after five years through ten years, Estimated Market Value	218,564	'
Available-for-sale securities, Due after ten years, Estimated Market Value	92,879	'
Available-for-sale securities, Gross Estimated Market Value	$357,572	'

Debt_and_Equity_Securities_Gro

Debt and Equity Securities - Gross Unrealized Losses and Fair Value of Company's Investments (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Security	Security
Held To Maturity Debt Securities [Line Items]	'	'
Held to Maturity Securities, Fair Value, Less than 12 Month	$11,056	$14,495
Held to Maturity Securities, Unrealized losses, Less than 12 Month	600	751
Held to Maturity Securities, Number of securities included, Less than 12 Month	17	26
Held to Maturity Securities, Fair Value, 12 Month or More	2,070	343
Held to Maturity Securities, Unrealized losses, 12 Month or More	31	8
Held to Maturity Securities, Number of securities included, 12 Month or More	6	2
Held to Maturity Securities, Total Fair Value	13,126	14,838
Held to Maturity Securities, Total Unrealized Losses	631	759
Available-for-Sale Securities, Fair Value, Less than 12 Month	225,354	211,684
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	3,884	5,902
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	87	83
Available-for-Sale Securities, Fair Value, 12 Month or More	38,973	26,111
Available-for-Sale Securities, unrealized loss, 12 Month or More	1,993	1,949
Available-for-Sale Securities, Number of securities included, 12 Month or More	27	23
Available-for-Sale Securities, Total Fair Value	264,327	237,795
Available-for-Sale Securities, Total Unrealized Losses	5,877	7,851
US Government-Sponsored Enterprises (GSEs) and agency-backed securities [Member]	'	'
Held To Maturity Debt Securities [Line Items]	'	'
Available-for-Sale Securities, Fair Value, Less than 12 Month	105,018	108,234
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	2,512	4,358
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	37	37
Available-for-Sale Securities, Fair Value, 12 Month or More	32,379	19,479
Available-for-Sale Securities, unrealized loss, 12 Month or More	1,691	1,603
Available-for-Sale Securities, Number of securities included, 12 Month or More	11	7
Available-for-Sale Securities, Total Fair Value	137,397	127,713
Available-for-Sale Securities, Total Unrealized Losses	4,203	5,961
Government- sponsored enterprises (GSEs) residential Mortgage Backed [Member]	'	'
Held To Maturity Debt Securities [Line Items]	'	'
Held to Maturity Securities, Fair Value, Less than 12 Month	6,730	6,678
Held to Maturity Securities, Unrealized losses, Less than 12 Month	431	520
Held to Maturity Securities, Number of securities included, Less than 12 Month	5	5
Held to Maturity Securities, Fair Value, 12 Month or More	'	'
Held to Maturity Securities, Unrealized losses, 12 Month or More	'	'
Held to Maturity Securities, Number of securities included, 12 Month or More	'	'
Held to Maturity Securities, Total Fair Value	6,730	6,678
Held to Maturity Securities, Total Unrealized Losses	431	520
Available-for-Sale Securities, Fair Value, Less than 12 Month	116,226	97,805
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	1,319	1,449
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	41	32
Available-for-Sale Securities, Fair Value, 12 Month or More	1,795	1,866
Available-for-Sale Securities, unrealized loss, 12 Month or More	27	32
Available-for-Sale Securities, Number of securities included, 12 Month or More	2	2
Available-for-Sale Securities, Total Fair Value	118,021	99,671
Available-for-Sale Securities, Total Unrealized Losses	1,346	1,481
Obligations of States and Political Subdivisions [Member]	'	'
Held To Maturity Debt Securities [Line Items]	'	'
Held to Maturity Securities, Fair Value, Less than 12 Month	4,326	7,817
Held to Maturity Securities, Unrealized losses, Less than 12 Month	169	231
Held to Maturity Securities, Number of securities included, Less than 12 Month	12	21
Held to Maturity Securities, Fair Value, 12 Month or More	2,070	343
Held to Maturity Securities, Unrealized losses, 12 Month or More	31	8
Held to Maturity Securities, Number of securities included, 12 Month or More	6	2
Held to Maturity Securities, Total Fair Value	6,396	8,160
Held to Maturity Securities, Total Unrealized Losses	200	239
Available-for-Sale Securities, Fair Value, Less than 12 Month	4,110	5,645
Available-for-Sale Securities, Unrealized Losses, Less than 12 Month	53	95
Available-for-Sale Securities, Number of Securities Included, Less than 12 Month	9	14
Available-for-Sale Securities, Fair Value, 12 Month or More	4,799	4,766
Available-for-Sale Securities, unrealized loss, 12 Month or More	275	314
Available-for-Sale Securities, Number of securities included, 12 Month or More	14	14
Available-for-Sale Securities, Total Fair Value	8,909	10,411
Available-for-Sale Securities, Total Unrealized Losses	$328	$409

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, 2014	Mar. 31, 2013
Basic EPS Computation:	'	'
Numerator - Earnings available to common Stockholders	$4,172	$2,978
Denominator - Weighted average number of common shares outstanding	7,522,280	7,445,701
Basic earnings per common share	$0.55	$0.40
Diluted EPS Computation:	'	'
Numerator - Earnings available to common Stockholders	$4,172	$2,978
Denominator - Weighted average number of common shares outstanding	7,522,280	7,445,701
Dilutive effect of stock options	4,356	4,842
Weighted average number of shares outstanding-diluted	7,526,636	7,450,543
Diluted earnings per common share	$0.55	$0.40

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Unrecognized tax benefits related to Federal or State income tax matters	$0
Accrued interest and 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, 2014
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, 2014
Standby Letters of Credit [Member]	'
Loss Contingencies [Line Items]	'
Contractual amount for off-balance sheet commitments	$27,529,000
Commitments to Extend Credit [Member]	'
Loss Contingencies [Line Items]	'
Contractual amount for off-balance sheet commitments	$225,404,000

Fair_Value_Measurements_Assets

Fair Value Measurements -Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	$357,572	$329,373
Fair Value Measurements Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	357,572	329,373
Other assets	16,437	11,390
Total assets at fair value	374,009	340,763
Fair Value Measurements Recurring [Member] | Mortgage Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	193,394	175,182
Fair Value Measurements Recurring [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	13,454	13,373
Fair Value Measurements Recurring [Member] | Quoted Market Prices in an Active Market (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Other assets	'	'
Total assets at fair value	'	'
Fair Value Measurements Recurring [Member] | Quoted Market Prices in an Active Market (Level 1) [Member] | Mortgage Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Fair Value Measurements Recurring [Member] | Quoted Market Prices in an Active Market (Level 1) [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Fair Value Measurements Recurring [Member] | Models with Significant Observable Market Parameters (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	357,572	329,373
Other assets	'	'
Total assets at fair value	357,572	329,373
Fair Value Measurements Recurring [Member] | Models with Significant Observable Market Parameters (Level 2) [Member] | Mortgage Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	193,394	175,182
Fair Value Measurements Recurring [Member] | Models with Significant Observable Market Parameters (Level 2) [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	13,454	13,373
Fair Value Measurements Recurring [Member] | Models with Significant Unobservable Market Parameters (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Other assets	16,437	11,390
Total assets at fair value	16,437	11,390
Fair Value Measurements Recurring [Member] | Models with Significant Unobservable Market Parameters (Level 3) [Member] | Mortgage Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Fair Value Measurements Recurring [Member] | Models with Significant Unobservable Market Parameters (Level 3) [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Fair Value Measurements Recurring [Member] | U.S. Government Sponsored Enterprises and Agency-Backed [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	150,724	140,818
Fair Value Measurements Recurring [Member] | U.S. Government Sponsored Enterprises and Agency-Backed [Member] | Quoted Market Prices in an Active Market (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'
Fair Value Measurements Recurring [Member] | U.S. Government Sponsored Enterprises and Agency-Backed [Member] | Models with Significant Observable Market Parameters (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	150,724	140,818
Fair Value Measurements Recurring [Member] | U.S. Government Sponsored Enterprises and Agency-Backed [Member] | Models with Significant Unobservable Market Parameters (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities available-for-sale, Carrying Value	'	'

Fair_Value_Measurements_Assets1

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans, net	$4,989,000	$4,718,000
Valuation allowance	3,200,000	4,500,000
Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	11,522,000	12,869,000
Impaired loans, net	17,419,000	22,380,000
Repossessed assets	28,941,000	35,249,000
Fair Value, Measurements, Nonrecurring [Member] | Quoted Market Prices in an Active Market (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	'	'
Impaired loans, net	'	'
Repossessed assets	'	'
Fair Value, Measurements, Nonrecurring [Member] | Models with Significant Observable Market Parameters (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	'	'
Impaired loans, net	'	'
Repossessed assets	'	'
Fair Value, Measurements, Nonrecurring [Member] | Models with Significant Unobservable Market Parameters (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other real estate	11,522,000	12,869,000
Impaired loans, net	17,419,000	22,380,000
Repossessed assets	$28,941,000	$35,249,000

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014
	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, 2014	Mar. 31, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Fair value, January 1, Other Assets	$11,390	$6,315
Total realized gains included in income, Other Assets	47	23
Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at March 31, Other Assets	'	'
Purchases, issuances and settlements, net, Other Assets	5,000	'
Transfers out of Level 3, Other Assets	'	'
Fair value, March 31, Other Assets	16,437	6,338
Fair value, January 1, Other Liabilities	'	'
Total realized gains included in income, Other Liabilities	'	'
Change in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at March 31 , Other Liabilities	'	'
Purchases, issuances and settlements, net, Other Liabilities	'	'
Transfers out of Level 3, Other Liabilities	'	'
Fair value, March 31 , Other Liabilities	'	'
Other Liabilities [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Total realized gains included in income related to financial assets and liabilities still on the consolidated balance sheet at March 31	'	'
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 and liabilities still on the consolidated balance sheet at March 31	'	'

Fair_Value_Measurements_Carryi

Fair Value Measurements - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Securities held-to-maturity, Carrying/Notional Amount	$29,283	$26,823
Loans, net, Carrying/Notional Amount	1,192,359	1,184,267
Mortgage loans held-for-sale, Carrying/Notional Amount	6,315	7,022
Deposits and securities sold under agreements to repurchase, Carrying/Notional Amount	1,607,831	1,563,333
Commitments to extend credit, Carrying/Notional Amount	'	'
Standby letters of credit, Carrying/Notional Amount	'	'
Securities held-to-maturity	29,159	26,561
Loans, net, Estimated Fair Value	1,197,806	1,185,271
Mortgage loans held-for-sale	6,315	7,022
Deposits and securities sold under agreements to repurchase, Estimated Fair Value	1,453,877	1,554,839
Commitments to extend credit, Estimated Fair Value	'	'
Standby letters of credit, Estimated Fair Value	'	'
Quoted Market Prices in an Active Market (Level 1) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Securities held-to-maturity	'	'
Loans, net, Estimated Fair Value	'	'
Mortgage loans held-for-sale	'	'
Deposits and securities sold under agreements to repurchase, Estimated Fair Value	'	'
Commitments to extend credit, Estimated Fair Value	'	'
Standby letters of credit, Estimated Fair Value	'	'
Models with Significant Observable Market Parameters (Level 2) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Securities held-to-maturity	29,159	26,561
Loans, net, Estimated Fair Value	'	'
Mortgage loans held-for-sale	'	'
Deposits and securities sold under agreements to repurchase, Estimated Fair Value	'	'
Commitments to extend credit, Estimated Fair Value	'	'
Standby letters of credit, Estimated Fair Value	'	'
Models with Significant Unobservable Market Parameters (Level 3) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Securities held-to-maturity	'	'
Loans, net, Estimated Fair Value	1,197,806	1,185,271
Mortgage loans held-for-sale	6,315	7,022
Deposits and securities sold under agreements to repurchase, Estimated Fair Value	1,453,877	1,554,839
Commitments to extend credit, Estimated Fair Value	'	'
Standby letters of credit, Estimated Fair Value	'	'