First US Bancshares (FUSB) 10-Q 13 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 13, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'UNITED SECURITY BANCSHARES INC	'
Entity Central Index Key	'0000717806	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Common Stock, Shares Outstanding	'	6,028,091

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Financial Condition (USD $)	Sep. 30, 2013	Dec. 31, 2012
ASSETS	'	'
Cash and Due from Banks	$12,048,000	$12,181,000
Interest Bearing Deposits in Banks	31,430,000	41,945,000
Total Cash and Cash Equivalents	43,478,000	54,126,000
Federal Funds Sold	5,000,000	5,000,000
Investment Securities Available-for-Sale, at fair value	121,744,000	92,614,000
Investment Securities Held-to-Maturity, at amortized cost	35,108,000	21,136,000
Federal Home Loan Bank Stock, at cost	906,000	936,000
Loans, net of allowance for loan losses of $9,282 and $19,278, respectively	304,778,000	337,400,000
Premises and Equipment, net	8,756,000	8,903,000
Cash Surrender Value of Bank-Owned Life Insurance	13,565,000	13,303,000
Accrued Interest Receivable	2,527,000	3,101,000
Investment in Limited Partnerships	819,000	836,000
Other Real Estate Owned	11,372,000	13,286,000
Other Assets	11,949,000	16,492,000
Total Assets	560,002,000	567,133,000
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'
Deposits	476,020,000	489,034,000
Accrued Interest Expense	263,000	413,000
Other Liabilities	7,535,000	8,401,000
Short-Term Borrowings	1,777,000	638,000
Long Term Borrowings	5,000,000	'
Total Liabilities	490,595,000	498,486,000
Commitments and Contingencies	'	'
Shareholders' Equity:	'	'
Common Stock, par value $0.01 per share, 10,000,000 shares authorized; 7,327,560 shares issued; 6,028,091 and 6,023,622 shares outstanding, respectively	73,000	73,000
Surplus	9,284,000	9,284,000
Accumulated Other Comprehensive Income, net of tax	796,000	3,139,000
Retained Earnings	80,259,000	77,287,000
Less Treasury Stock: 1,299,469 and 1,303,938 shares at cost, respectively	-20,992,000	-21,123,000
Noncontrolling Interest	-13,000	-13,000
Total Shareholders' Equity	69,407,000	68,647,000
Total Liabilities and Shareholders' Equity	$560,002,000	$567,133,000

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Loans, allowance for loan losses	$9,282	$19,278
Common Stock, par value	$0.01	$0.01
Common Stock, shares authorized	10,000,000	10,000,000
Common Stock, shares issued	7,327,560	7,327,560
Common Stock, shares outstanding	6,028,091	6,023,622
Treasury Stock, shares	1,299,469	1,303,938

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
INTEREST INCOME:	'	'	'	'
Interest and Fees on Loans	$7,413,000	$8,488,000	$23,020,000	$26,454,000
Interest on Investment Securities	857,000	840,000	2,276,000	2,632,000
Total Interest Income	8,270,000	9,328,000	25,296,000	29,086,000
INTEREST EXPENSE:	'	'	'	'
Interest on Deposits	693,000	1,027,000	2,215,000	3,549,000
Interest on Borrowings	9,000	4,000	13,000	119,000
Total Interest Expense	702,000	1,031,000	2,228,000	3,668,000
NET INTEREST INCOME	7,568,000	8,297,000	23,068,000	25,418,000
Provision for loan losses	240,000	492,000	799,000	3,175,000
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	7,328,000	7,805,000	22,269,000	22,243,000
NON-INTEREST INCOME:	'	'	'	'
Service and Other Charges on Deposit Accounts	586,000	639,000	1,734,000	1,870,000
Credit Life Insurance Income	239,000	272,000	518,000	613,000
Other Income	466,000	542,000	1,890,000	1,575,000
Total Non-Interest Income	1,291,000	1,453,000	4,142,000	4,058,000
NON-INTEREST EXPENSE:	'	'	'	'
Salaries and Employee Benefits	4,029,000	3,433,000	12,006,000	10,912,000
Occupancy Expense	495,000	488,000	1,456,000	1,416,000
Furniture and Equipment Expense	301,000	317,000	865,000	970,000
Impairment on Other Real Estate	215,000	377,000	577,000	3,241,000
Loss on Sale of Other Real Estate	48,000	572,000	753,000	1,032,000
Other Expense	2,277,000	2,375,000	6,576,000	7,261,000
Total Non-Interest Expense	7,365,000	7,562,000	22,233,000	24,832,000
INCOME BEFORE INCOME TAXES	1,254,000	1,696,000	4,178,000	1,469,000
PROVISION FOR INCOME TAXES	350,000	517,000	1,206,000	157,000
Net income	$904,000	$1,179,000	$2,972,000	$1,312,000
BASIC AND DILUTED NET INCOME PER SHARE	$0.15	$0.20	$0.49	$0.22
DIVIDENDS PER SHARE	$0	$0	$0	$0

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income	$904	$1,179	$2,972	$1,312
Other comprehensive income:	'	'	'	'
Change in unrealized holding gains (losses) on available-for-sale securities arising during period, net of tax (benefit) of $(384), $74, $(1,406), and $279, respectively	-639	123	-2,343	465
Total comprehensive income	$265	$1,302	$629	$1,777

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Tax (benefits) on change in unrealized holding gains on available-for-sale securities arising during period	($384)	$74	($1,406)	$279

Condensed_Consolidated_Stateme5

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net income	$2,972,000	$1,312,000
Adjustments to reconcile net income to cash provided by operating activities:	'	'
Depreciation	520,000	524,000
Amortization of premiums and discounts, net	641,000	890,000
Provision for loan losses	799,000	3,175,000
Impairment of OREO	577,000	3,241,000
Loss on sale of OREO	753,000	1,032,000
Net other operating activities	4,969,000	1,217,000
Total adjustments	8,259,000	10,079,000
Net cash provided by operating activities	11,231,000	11,391,000
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Proceeds from maturities and prepayments of investment securities, available-for-sale	27,299,000	35,745,000
Proceeds from maturities and prepayments of investment securities, held-to-maturity	9,224,000	1,170,000
Proceeds from redemption of Federal Home Loan Bank stock	256,000	1,925,000
Proceeds from the sale of other real estate	2,780,000	4,912,000
Purchase of premises and equipment	-82,000	-420,000
Purchase of investment securities, available-for-sale	-60,825,000	-16,296,000
Purchase of investment securities, held-to-maturity	-23,191,000	-12,189,000
Purchase of FHLB stock	-225,000	'
Net increase in federal funds sold	'	-5,000,000
Net change in loan portfolio	29,629,000	27,158,000
Net cash (used in) provided by investing activities	-15,135,000	37,005,000
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Net decrease in customer deposits	-13,014,000	-20,446,000
Exercise of stock options	'	26,000
Increase (decrease) in borrowings	6,139,000	-19,023,000
Reissuance of treasury stock	131,000	85,000
Net cash used in financing activities	-6,744,000	-39,358,000
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	-10,648,000	9,038,000
CASH AND CASH EQUIVALENTS, beginning of period	54,126,000	52,797,000
CASH AND CASH EQUIVALENTS, end of period	43,478,000	61,835,000
Cash paid for:	'	'
Interest	2,377,000	3,935,000
Income taxes	17,000	90,000
NON-CASH TRANSACTIONS:	'	'
Other real estate acquired in settlement of loans	$2,196,000	$6,019,000

General

General	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
General	'
	1	GENERAL
	The accompanying unaudited interim condensed consolidated financial statements include the accounts of United Security Bancshares, Inc. (“USBI”) and its subsidiaries (collectively, the “Company”). USBI is the parent holding company of First United Security Bank (the “Bank” or “FUSB”). The Bank operates a finance company, Acceptance Loan Company, Inc. (“ALC”). All significant intercompany transactions and accounts have been eliminated.
	The unaudited interim condensed consolidated financial statements, in the opinion of management, reflect all adjustments necessary for a fair presentation of consolidated financial position, results of operations and cash flows for the periods presented. Such adjustments are of a normal, recurring nature. The results of operations for any interim period are not necessarily indicative of results expected for the fiscal year ending December 31, 2013. While certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), management believes that the disclosures herein are adequate to make the information presented not misleading. These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in USBI’s Annual Report on Form 10-K for the year ended December 31, 2012. The accounting policies followed by the Company are set forth in Note 2, “Summary of Significant Accounting Policies,” of the Notes to Consolidated Financial Statements in USBI’s Annual Report on Form 10-K for the year ended December 31, 2012. In preparing the unaudited interim condensed consolidated financial statements, management evaluated subsequent events through the date on which the unaudited interim condensed consolidated financial statements were issued.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2013
Accounting Changes And Error Corrections [Abstract]	'
Recent Accounting Pronouncements	'
	2	RECENT ACCOUNTING PRONOUNCEMENTS
	In December 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2011-11, Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities. The amendments in this ASU affect all entities that have financial instruments and derivative instruments that are either (1) offset in accordance with either Accounting Standards Codification (“ASC”) Section 210-20-45 or Section 815-10-45 or (2) subject to an enforceable master netting arrangement or similar agreement. The requirements amend the disclosure requirements on offsetting in ASC Section 210-20-50. This information will enable users of an entity’s financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments in the scope of this ASU. An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013 and interim periods within those annual periods. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The adoption of this guidance, which involves disclosure only, did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In February 2013, the FASB issued ASU No. 2013-02, which updated ASC Topic 220, Comprehensive Income, which requires an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required under GAAP to be reclassified in its entirety to net income. For other amounts that are not reclassified in their entirety to net income, an entity is required to cross-reference other disclosures required under GAAP that provide additional detail about those amounts. ASU No. 2013-02 is effective for annual reporting periods beginning on or after December 15, 2012 and interim periods within those annual periods. The adoption of ASU No. 2013-02 did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

Net_Income_Per_Share

Net Income Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Net Income Per Share	'
	3	NET INCOME PER SHARE
	Basic net income per share is computed by dividing net income by the weighted average shares during the three- and nine-month periods ended September 30, 2013 and 2012. Diluted net income per share for each of the three- and nine-month periods ended September 30, 2013 and 2012 is computed based on the weighted average shares outstanding during the period plus the dilutive effect of all potentially dilutive instruments outstanding. There were no outstanding potentially dilutive instruments during the three-and nine-month periods ended September 30, 2013 or 2012, and, therefore, basic and diluted weighted average shares outstanding were the same.
	The following table represents the basic and diluted net income per share calculations for the three- and nine-month periods ended September 30, 2013 and 2012 (in thousands of dollars, except per share data):
					Weighted		Basic and
					Average		Diluted Net
			Net		Shares		Income
			Income		Outstanding		Per Share
	For the Three Months Ended:
	September 30, 2013		$	904		6,027,562	$	0.15
	September 30, 2012		$	1,179		6,023,124	$	0.2
	For the Nine Months Ended:
	September 30, 2013		$	2,972		6,024,935	$	0.49
	September 30, 2012		$	1,312		6,022,648	$	0.22

Comprehensive_Income

Comprehensive Income	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Comprehensive Income	'
	4	COMPREHENSIVE INCOME
	Comprehensive income consists of net income and the change in the unrealized gains or losses on the Company’s available-for-sale securities portfolio arising during the period. In the calculation of comprehensive income, certain reclassification adjustments are made for any sale of investment securities to avoid double counting items that are displayed as part of net income for a period that also had been displayed as part of other comprehensive income in that period or earlier periods.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	5	FAIR VALUE OF FINANCIAL INSTRUMENTS
	The Company follows the provisions of ASC Topic 820, Fair Value Measurements, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements.
	Fair Value Hierarchy
	The assumptions used in the estimation of the fair value of the Company’s financial instruments are detailed below. Where quoted prices are not available, fair values are based on estimates using discounted cash flows and other valuation techniques. The use of discounted cash flows can be significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. The following disclosures should not be considered a surrogate of the liquidation value of the Company, but rather represent a good-faith estimate of the increase or decrease in value of financial instruments held by the Company since purchase, origination or issuance.
	Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between willing market participants at the measurement date. In determining fair value, the Company uses various methods, including market, income and cost approaches. Based on these approaches, the Company often utilizes certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and/or the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated or generally unobservable inputs. The Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. Based on the observability of the inputs used in the valuation techniques, the Company is required to provide the following information according to the fair value hierarchy. The fair value hierarchy ranks the quality and reliability of the information used to determine fair values. Assets and liabilities carried at fair value will be classified and disclosed in one of the following three categories:
		•		Level 1 – Valuations for assets and liabilities traded in active exchange markets, such as the New York Stock Exchange. Level 1 also includes equity securities in banks that are publicly traded. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.
		•		Level 2 – Valuations for assets and liabilities traded in less active dealer or broker markets. Valuations are obtained from third-party pricing services for identical or similar assets or liabilities.
		•		Level 3 – Valuations for assets and liabilities that are derived from other valuation methodologies, including option pricing models, discounted cash flow models and similar techniques, and not based on market exchange, dealer or broker-traded transactions. Level 3 valuations incorporate certain assumptions and projections in determining the fair value assigned to such assets or liabilities.
	The Company rarely transfers assets and liabilities measured at fair value between Level 1 and Level 2 measurements. Trading account assets and securities available-for-sale may be periodically transferred to or from Level 3 valuation based on management’s conclusion regarding the best method of pricing for an individual security. Such transfers are accounted for as if they occurred at the beginning of a reporting period. There were no such transfers during the quarter ended September 30, 2013 or the year ended December 31, 2012.
	Fair Value Measurements on a Recurring Basis
	Available-for-Sale Securities
	Where quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities would include exchange traded equities. Level 2 securities include U.S. treasury and agency securities, mortgage-backed agency securities, obligations of states and political subdivisions and certain corporate, asset-backed and other securities. Level 2 fair values are obtained from quoted prices of securities with similar characteristics. In certain cases, where Level 1 or Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy.
	The following table presents the balances of available-for-sale securities measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012.
			Fair Value Measurements at September 30, 2013 Using
			Totals		Quoted			Significant		Significant
			At		Prices in			Other		Unobservable
			September 30,		Active			Observable		Inputs
			2013		Markets For			Inputs		(Level 3)
					Identical			(Level 2)
					Assets
					(Level 1)
			(In Thousands of Dollars)
	Mortgage-backed securities		$	102,020	$	—		$	102,020	$	—
	Obligations of states, counties and political subdivisions			14,877		—			14,877		—
	U.S. treasury securities			3,846		—			3,846		—
	U.S. agencies			1,001		—			1,001		—
			Fair Value Measurements at December 31, 2012 Using
			Totals		Quoted			Significant		Significant
			At		Prices in			Other		Unobservable
			December 31,		Active			Observable		Inputs
			2012		Markets For			Inputs		(Level 3)
					Identical			(Level 2)
					Assets
					(Level 1)
			(In Thousands of Dollars)
	Mortgage-backed securities		$	77,553	$	—		$	77,553	$	—
	Obligations of states, counties and political subdivisions			14,981		—			14,981		—
	U.S. treasury securities			80		—			80		—
	Fair Value Measurements on a Non-recurring Basis
	Impaired Loans
	Estimates of fair value are determined based on a variety of information, including the use of available appraisals, estimates of market value by licensed appraisers or local real estate brokers and the knowledge and experience of the Company’s management related to values of properties in the Company’s market areas. Management takes into consideration the type, location and occupancy of the property, as well as current economic conditions in the area in which the property is located, in assessing estimates of fair value. Accordingly, fair value estimates for impaired loans are classified as Level 3.
	Loan impairment is reported when full payment under the loan terms is not expected. Impaired loans are carried at the present value of estimated future cash flows using the loan’s existing rate or the fair value of collateral if the loan is collateral dependent. A portion of the allowance for loan losses is allocated to impaired loans if the value of such loans is deemed to be less than the unpaid balance. If these allocations cause the allowance for loan losses to increase, such increase is reported as a component of the provision for loan losses. When an impaired loan is determined to be collateral dependent, the fair value is determined through the utilization of a third-party appraisal. It is the policy of the Company to update appraisals every 18-24 months. The types of collateral influence the frequency of obtaining updated appraisals. Management knows the market trends of collateral values well and monitors trends in sales and valuations in all of the various categories of collateral. These trends influence how often new appraisals are obtained within the 18-24 month timeframe. An example would be loans collateralized by residential subdivision lots. The values of this type of collateral have been volatile in recent years, and, therefore, appraisals are generally updated at the lower end of the timeframe (i.e., closer to 18 months), while timberland appraisals which have been less volatile in recent years would be updated closer to the upper end of the timeframe (i.e., closer to 24 months). Any observed trend indicating significant changes in valuations would require updated appraisals. Based on experience, current appraisals are discounted 9% for estimated costs associated with foreclosures and costs to sell. If a loan is evaluated for impairment under ASC Topic 310-10-35, Accounting by Creditors for Impairment of a Loan, and the appraisal is outdated, a new appraisal is ordered. If the new appraisal is not received in sufficient time to assess any required impairment to meet financial reporting obligations, the old appraisal may be adjusted to reflect values observed in similar properties. In recent years, discounts have ranged from 20% to 30% and have been based on the most recent valuation/appraisal information available related to that particular type of loan/collateral. After a new appraisal is obtained, the analysis is updated to reflect the new valuation. Loan losses are charged against the allowance when management believes that the uncollectibility of a loan is confirmed. Loans, net of specific allowances, subject to this evaluation amounted to $9,848,600 and $14,956,079 as of September 30, 2013 and December 31, 2012, respectively. This valuation would be considered Level 3, consisting of appraisals of underlying collateral and discounted cash flow analysis.
	Foreclosed Assets
	Estimates of fair values are determined based on a variety of information, including the use of available appraisals, estimates of market value by licensed appraisers or local real estate brokers and the knowledge and experience of the Company’s management related to values of properties in the Company’s market areas. Management takes into consideration the type, location and occupancy of the property, as well as current economic conditions in the area in which the property is located, in assessing estimates of fair value. Accordingly, the fair value estimates for foreclosed real estate are classified as Level 3.
	During 2013, certain foreclosed assets, upon initial recognition, were measured and reported at fair value through a charge-off to the allowance for loan losses based upon the fair value of the foreclosed asset. The fair value of a foreclosed asset, upon initial recognition, is estimated using Level 2 inputs based on observable market data or Level 3 inputs based on customized discounting criteria. Foreclosed assets measured at fair value upon initial recognition totaled $2,093,755 and $2,097,440 (utilizing Level 3 valuation inputs) as of September 30, 2013 and December 31, 2012, respectively. In connection with the measurement and initial recognition of the foregoing foreclosed assets, the Company recognized charge-offs of the allowance for loan losses totaling approximately $515,399 and $407,043 during the periods ended September 30, 2013 and December 31, 2012, respectively. Foreclosed assets totaling $2,640,103 and $9,270,443 (utilizing Level 3 valuation inputs) were remeasured at fair value at September 30, 2013 and December 31, 2012, respectively, resulting in impairment loss of $577,000 and $3,582,596 on other real estate owned during the periods ended September 30, 2013 and December 31, 2012, respectively.
	The following table presents the balances of impaired loans and foreclosed assets measured at fair value on a non-recurring basis as of September 30, 2013 and December 31, 2012.
			Fair Value Measurements at September 30, 2013 Using
			Totals		Quoted			Significant		Significant
			At		Prices in			Other		Unobservable
			September 30,		Active			Observable		Inputs
			2013		Markets For			Inputs		(Level 3)
					Identical			(Level 2)
					Assets
					(Level 1)
			(In Thousands of Dollars)
	Impaired loans		$	9,849	$	—		$	—	$	9,849
	Foreclosed property and other real estate			4,734		—			—		4,734
			Fair Value Measurements at December 31, 2012 Using
			Totals		Quoted			Significant		Significant
			At		Prices in			Other		Unobservable
			December 31,		Active			Observable		Inputs
			2012		Markets For			Inputs		(Level 3)
					Identical			(Level 2)
			Assets
			(Level 1)
		(In Thousands of Dollars)
Impaired loans		$	14,956	$	—		$	—	$	14,956
Foreclosed property and other real estate			11,368		—			—		11,368
Non-Recurring Fair Value Measurements Using Significant Unobservable Inputs:
The following table presents information regarding assets and liabilities measured at fair value using significant unobservable inputs (Level 3) as of September 30, 2013. The table includes the valuation techniques and the significant unobservable inputs utilized. The range of each unobservable input, as well as the weighted-average within the range utilized at September 30, 2013, are both included. Following the table is a description of the valuation technique and the sensitivity of the technique to changes in the significant unobservable input.
		Level 3 Significant Unobservable Input Assumptions
		Fair Value		Valuation Technique		Unobservable Input	Quantitative
		September 30,					Range
		2013					of Unobservable
							Inputs (Weighted-
							Average)
		(In
		Thousands of
		Dollars)
Non-recurring fair value measurements:
Impaired loans		$	9,849	Multiple data points, including discount to appraised value of collateral based on recent market activity		Appraisal compatibility adjustment (discount)	9% - 10%
							-9.50%
Foreclosed property and other real estate		$	4,734	Discount to appraised value of property based on recent market activity for sales of similar properties		Appraisal compatibility adjustment (discount)	9% - 10%
							-9.50%
Impaired loans
Impaired loans are valued based on multiple data points indicating the fair value for each loan. The primary data point for non-performing loans is the appraisal value of the underlying collateral to which a discount is applied. Management establishes this discount or comparability adjustment based on recent sales of similar property types. As liquidity in the market increases or decreases, the comparability adjustment and the resulting asset valuation are impacted.
Foreclosed property and other real estate
Foreclosed property and other real estate under a binding contract for sale are valued based on contract price. If no sales contract is pending for a specific property, management establishes a comparability adjustment to the appraised value based on historical activity considering proceeds for properties sold versus the corresponding appraised value. Increases or decreases in realization for properties sold impact the comparability adjustment for similar assets remaining on the balance sheet.
Fair Value of Financial Instruments
ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized on the face of the balance sheet, for which it is practicable to estimate that value. The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:
Cash, due from banks and federal funds sold: The carrying amount of cash, due from banks and federal funds sold approximates fair value.
Federal Home Loan Bank (“FHLB”): Based on the redemption provision of the FHLB, the stock has no quoted market value and is carried at cost.
Securities: Fair values of securities are based on quoted market prices where available. If quoted market prices are not available, estimated fair values are based on market prices of comparable instruments.
Accrued interest receivable and payable: The carrying amount of accrued interest approximates fair value.
Loans, net: For variable-rate loans, fair values are based on carrying values. Fixed-rate commercial loans, other installment loans and certain real estate mortgage loans are valued using discounted cash flows. The discount rate used to determine the present value of these loans is based on interest rates currently being charged by the Company on comparable loans as to credit risk and term.
Demand and savings deposits: The fair values of demand deposits are equal to the carrying value of such deposits. Demand deposits include non-interest bearing demand deposits, savings accounts, NOW accounts and money market demand accounts.
Time deposits: The fair values of relatively short-term time deposits are equal to their carrying values. Discounted cash flows are used to value long-term time deposits. The discount rate used is based on interest rates currently being offered by the Company on comparable deposits as to amount and term.
Short-term borrowings: These borrowings may consist of federal funds purchased, securities sold under agreements to repurchase and the floating rate borrowings from the FHLB account. Due to the short-term nature of these borrowings, fair values approximate carrying values.
Long-term borrowings: The fair value of this debt is estimated using discounted cash flows based on the Company’s current incremental borrowing rate for similar types of borrowing arrangements as of September 30, 2013 and December 31, 2012.
Off-balance sheet instruments: The carrying amount of commitments to extend credit and standby letters of credit approximates fair value. The carrying amount of the off-balance sheet financial instruments is based on fees currently charged to enter into such agreements.
The estimated fair value and related carrying or notional amounts, as well as the level within the fair value hierarchy, of the Company’s financial instruments at September 30, 2013 and December 31, 2012 were as follows:
		September 30, 2013
		Carrying		Estimated			Level 1		Level 2		Level 3
		Amount		Fair Value
		(In Thousands of Dollars)
Assets:
Cash and cash equivalents		$	43,478	$	43,478		$	43,478	$	—	$	—
Investment securities available-for-sale			121,744		121,744			—		121,744		—
Investment securities held-to-maturity			35,108		33,508			—		33,508		—
Federal funds sold			5,000		5,000			5,000		—		—
Federal Home Loan Bank stock			906		906			—		906		—
Loans, net of allowance for loan losses			304,778		305,032			—		—		305,032
Liabilities:
Deposits			476,020		476,534			—		476,534		—
Short-term borrowings			1,777		1,777			—		1,777		—
Long-term borrowings			5,000		5,009			—		5,009		—
		December 31, 2012
		Carrying		Estimated			Level 1		Level 2		Level 3
		Amount		Fair Value
		(In Thousands of Dollars)
Assets:
Cash and cash equivalents		$	54,126	$	54,126		$	54,126	$	—	$	—
Investment securities available-for-sale			92,614		92,614			—		92,614		—
Investment securities held-to-maturity			21,136		21,185			—		21,185		—
Federal funds sold			5,000		5,000			5,000		—		—
Federal Home Loan Bank stock			936		936			—		936		—
Loans, net of allowance for loan losses			337,400		339,230			—		—		339,230
Liabilities:
Deposits			489,034		490,596			—		490,596		—
Short-term borrowings			638		638			—		638		—

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2013
Investments Debt And Equity Securities [Abstract]	'
Investment Securities	'
	6	INVESTMENT SECURITIES
	Details of investment securities available-for-sale and held-to-maturity at September 30, 2013 and December 31, 2012 are as follows:
			Available-for-Sale
			September 30, 2013
			Amortized		Gross			Gross			Estimated
					Unrealized			Unrealized			Fair
			Cost		Gains			Losses			Value
			(In Thousands of Dollars)
	Mortgage-backed securities		$	101,147	$	1,888		$	(1,015	)	$	102,020
	Obligations of states, counties and political subdivisions			14,160		742			(25	)		14,877
	U.S. treasury securities			4,164		—			(318	)		3,846
	Obligations of U.S. government sponsored agencies			1,000		1			—			1,001
	Total		$	120,471	$	2,631		$	(1,358	)	$	121,744
			Held-to-Maturity
			September 30, 2013
			Amortized		Gross			Gross			Estimated
					Unrealized			Unrealized			Fair
			Cost		Gains			Losses			Value
			(In Thousands of Dollars)
	U.S. agencies		$	35,108	$	—		$	(1,600	)	$	33,508
			Available-for-Sale
			December 31, 2012
					Gross			Gross			Estimated
			Amortized		Unrealized			Unrealized			Fair
			Cost		Gains			Losses			Value
			(In Thousands of Dollars)
	Mortgage-backed securities		$	74,117	$	3,468		$	(32	)	$	77,553
	Obligations of states, counties and political subdivisions			13,395		1,586			—			14,981
	U.S. treasury securities			80		—			—			80
	Total		$	87,592	$	5,054		$	(32	)	$	92,614
			Held-to-Maturity
			December 31, 2012
			Amortized		Gross			Gross			Estimated
					Unrealized			Unrealized			Fair
			Cost		Gains			Losses			Value
			(In Thousands of Dollars)
	U.S. agencies		$	21,136	$	56		$	(7	)	$	21,185
	The scheduled maturities of investment securities available-for-sale and held-to-maturity at September 30, 2013 are presented in the following table:
			Available-for-Sale					Held-to-Maturity
			Amortized		Estimated			Amortized			Estimated
					Fair						Fair
			Cost		Value			Cost			Value
			(In Thousands of Dollars)
	Maturing within one year		$	281	$	284		$	—		$	—
	Maturing after one to five years			10,641		11,127			—			—
	Maturing after five to ten years			56,585		56,593			15,196			14,853
	Maturing after ten years			52,964		53,740			19,912			18,655
	Total		$	120,471	$	121,744		$	35,108		$	33,508
	For purposes of the maturity table, mortgage-backed securities, which are not due at a single maturity date, have been allocated over maturity groupings based on the weighted-average contractual maturities of underlying collateral. The mortgage-backed securities generally mature earlier than their weighted-average contractual maturities because of principal prepayments.
	The following table reflects the Company’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2013 and December 31, 2012. Management evaluates securities for other-than-temporary impairment no less frequently than quarterly and more frequently when economic or market concerns warrant such evaluation. Consideration is given to (1) the length of time and the extent to which fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer and (3) whether 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. At September 30, 2013 and December 31, 2012, based on the aforementioned considerations, management did not record an other-than-temporary impairment on any security that was in an unrealized loss position.
			Available-for-Sale
			September 30, 2013
			Less than 12 Months					12 Months or More
					Unrealized						Unrealized
			Fair Value		Losses			Fair Value			Losses
			(In Thousands of Dollars)
	Mortgage-backed securities		$	50,328	$	(996	)	$	296		$	(19	)
	U.S. treasury securities			3,766		(318	)		—			—
	Obligations of states, counties and political subdivisions			1,944		(25	)		—			—
			$	56,038	$	(1,339	)	$	296		$	(19	)
			Held-to-Maturity
			September 30, 2013
			Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
U.S. agencies		$	33,508	$	(1,600	)	$	—		$	—
		Available-for-Sale
		December 31, 2012
		Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
U.S. treasury securities		$	80	$	—		$	—		$	—
Mortgage-backed securities			1,173		(3	)		5,617			(29	)
		$	1,253	$	(3	)	$	5,617		$	(29	)
		Held-to-Maturity
		December 31, 2012
		Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
U.S. agencies		$	7,491	$	(7	)	$	—		$	—
As of September 30, 2013, two debt securities had been in a loss position for more than twelve months, and forty-three debt securities had been in a loss position for less than twelve months. The losses for all securities are considered to be a direct result of the effect that the current interest rate environment has on the value of debt securities and not related to the creditworthiness of the issuers. Further, the Company has the current intent and ability to retain its investments in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. Therefore, the Company has not recognized any other-than-temporary impairments.
Investment securities available-for-sale with a carrying value of $69.7 million and $61.6 million at September 30, 2013 and December 31, 2012, respectively, were pledged to secure public deposits and for other purposes.
There were no gross gains or losses realized on sales of securities available-for-sale during the periods ended September 30, 2013 or December 31, 2012, respectively.

Investments_in_Limited_Partner

Investments in Limited Partnerships	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Investments in Limited Partnerships	'
	7	INVESTMENTS IN LIMITED PARTNERSHIPS
	The Company has limited partnership investments in affordable housing projects for which it provides funding as a limited partner and receives tax credits related to its investments in the projects based on its partnership share. The Company has invested in limited partnerships of affordable housing projects, both as direct investments and investments in funds that invest solely in affordable housing projects. The Company has determined that these structures require evaluation as a variable interest entity (“VIE”) under ASC Topic 810, Consolidation. The Company consolidates one of the funds in which it has a 99.9% limited partnership interest. The resulting financial impact to the Company of the consolidation was a net increase to total assets of approximately $53,388 as of September 30, 2013. The remaining limited partnership investments are unconsolidated and are accounted for under the cost method as allowed under ASC Topic 325, Accounting for Tax Benefits Resulting from Investments in Affordable Housing Projects. The Company amortizes the excess of carrying value of the investment over its estimated residual value during the period in which tax credits are allocated to the investors. The Company’s maximum exposure to future loss related to these limited partnerships is limited to the $818,999 recorded investment.
	The assets and liabilities of these partnerships consist primarily of apartment complexes and related mortgages. The Company’s carrying value approximates cost or its underlying equity in the net assets of the partnerships. Market quotations are not available for any of the aforementioned partnerships. Management has no knowledge of intervening events since the date of the partnerships’ financial statements that would have had a material effect on the Company’s consolidated financial position or results of operations.
	The Company had no remaining cash commitments to these partnerships at September 30, 2013.

Loans_and_Allowance_for_Loan_L

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Loans and Allowance for Loan Losses	'
	8	LOANS AND ALLOWANCE FOR LOAN LOSSES
	At September 30, 2013 and December 31, 2012, the composition of the loan portfolio by reporting segment and portfolio segment was as follows:
			September 30, 2013
			FUSB		ALC			Total
			(In Thousands of Dollars)
	Real estate loans:
	Construction, land development and other land loans		$	13,650	$	—		$	13,650
	Secured by 1-4 family residential properties			35,532		27,807			63,339
	Secured by multi-family residential properties			22,085		—			22,085
	Secured by non-farm, non-residential properties			121,586		—			121,586
	Other			771		—			771
	Commercial and industrial loans			38,665		—			38,665
	Consumer loans			11,045		47,426			58,471
	Other loans			746		—			746
	Total loans		$	244,080	$	75,233		$	319,313
	Less: Unearned interest and fees			160		5,093			5,253
	Allowance for loan losses			6,349		2,933			9,282
	Net loans		$	237,571	$	67,207		$	304,778
			December 31, 2012
			FUSB		ALC			Total
			(In Thousands of Dollars)
	Real estate loans:
	Construction, land development and other land loans		$	30,635	$	—		$	30,635
	Secured by 1-4 family residential properties			38,450		33,047			71,497
	Secured by multi-family residential properties			24,187		—			24,187
	Secured by non-farm, non-residential properties			129,235		—			129,235
	Other			801		—			801
	Commercial and industrial loans			42,903		—			42,903
	Consumer loans			14,483		47,001			61,484
	Other loans			1,037		—			1,037
	Total loans		$	281,731	$	80,048		$	361,779
	Less: Unearned interest and fees			175		4,926			5,101
	Allowance for loan losses			15,765		3,513			19,278
	Net loans		$	265,791	$	71,609		$	337,400
	The Company grants commercial, real estate and installment loans to its customers. Although the Company has a diversified loan portfolio, 69.3% and 70.9% of the portfolio was concentrated in loans secured by real estate located primarily within a single geographic region of the United States as of September 30, 2013 and December 31, 2012, respectively.
	Portfolio Segments
	The Company has divided the loan portfolio into eight portfolio segments, each with different risk characteristics and methodologies for assessing the risk described as follows:
	Construction, land development and other land loans – Commercial construction, land and land development loans include the development of residential housing projects, loans for the development of commercial and industrial use property and loans for the purchase and improvement of raw land. These loans are secured in whole or in part by the underlying real estate collateral and are generally guaranteed by the principals of the borrowing entity.
	Secured by 1–4 family residential properties – These loans include conventional mortgage loans on one-to-four family residential properties. These properties may serve as the borrower’s primary residence, vacation home or investment property. Also included in this portfolio are home equity loans and lines of credit. This type of lending, which is secured by a first or second mortgage on the borrower’s residence, allows customers to borrow against the equity in their home.
	Secured by multi-family residential properties – These are mortgage loans secured by apartment buildings.
	Secured by non-farm, non-residential properties – Commercial real estate loans include loans secured by commercial and industrial properties, office or mixed-use facilities, strip shopping centers or other commercial property. These loans are generally guaranteed by the principals of the borrowing entity.
	Other real estate loans – Other real estate loans are loans primarily for agricultural production, secured by mortgages on farm land.
	Commercial and industrial loans – Includes loans to commercial customers for use in normal business to finance working projects. These credits may be loans and lines of credit to financially strong borrowers, secured by inventories, equipment or receivables, and are generally guaranteed by the principals of the borrowing entity.
	Consumer loans – Includes a variety of secured and unsecured personal loans, including automobile loans, loans for household and personal purposes and all other direct consumer installment loans.
	Other loans – Other loans comprise overdrawn checking accounts reclassified to loans and overdraft lines of credit.
	Related Party Loans
	In the ordinary course of business, the Bank makes loans to certain officers and directors of USBI, the Bank and ALC, including companies with which they are associated. These loans are made on the same terms as those prevailing for comparable transactions with others. Such loans do not represent more than normal risk of collectibility, nor do they present other unfavorable features. The aggregate balances of such related party loans and commitments at September 30, 2013 and December 31, 2012 were $3,689,631 and $2,468,563, respectively. During the quarter ended September 30, 2013, no new loans were extended to these parties, and repayments by active related parties were $53,446. During the year ended December 31, 2012, new loans to these parties totaled $310,265, and repayments by active related parties were $747,536.
	Allowance for Loan Losses
	The following tables present changes in the allowance for loan losses by reporting segment and loan type as of September 30, 2013 and December 31, 2012:
			FUSB
			September 30, 2013
			Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
					Real Estate						Real Estate
			(In Thousands of Dollars)
	Allowance for loan losses:
	Beginning balance		$	977	$	14,216		$	168		$	338		$	66		$	—		$	15,765
	Charge-offs			462		7,950			248			493			2			—			9,155
	Recoveries			87		43			65			4			2			—			201
	Provision			168		(1,381	)		195			599			(43	)		—			(462	)
	Ending balance			770		4,928			180			448			23			—			6,349
	Ending balance individually evaluated for impairment			224		2,561			—			—			—			—			2,785
	Ending balance collectively evaluated for impairment		$	546	$	2,367		$	180		$	448		$	23		$	—		$	3,564
	Loan receivables:
Ending balance			38,665		158,092			11,045			35,532			746			—			244,080
Ending balance individually evaluated for impairment			788		34,532			—			295			—			—			35,615
Ending balance collectively evaluated for impairment		$	37,877	$	123,560		$	11,045		$	35,237		$	746		$	—		$	208,465
		ALC
		September 30, 2013
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance		$	—	$	—		$	2,733		$	780		$	—		$	—		$	3,513
Charge-offs			—		—			2,129			407			—			—			2,536
Recoveries			—		—			680			15			—			—			695
Provision			—		—			1,075			186			—			—			1,261
Ending balance			—		—			2,359			574			—			—			2,933
Ending balance individually evaluated for impairment			—		—			—			—			—			—			—
Ending balance collectively evaluated for impairment		$	—	$	—		$	2,359		$	574		$	—		$	—		$	2,933
Loan receivables:
Ending balance			—		—			47,426			27,807			—			—			75,233
Ending balance individually evaluated for impairment			—		—			—			—			—			—			—
Ending balance collectively evaluated for impairment		$	—	$	—		$	47,426		$	27,807		$	—		$	—		$	75,233
		FUSB & ALC
		September 30, 2013
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance		$	977	$	14,216		$	2,901		$	1,118		$	66		$	—		$	19,278
Charge-offs			462		7,950			2,377			900			2			—			11,691
Recoveries			87		43			745			19			2			—			896
Provision			168		(1,381	)		1,270			785			(43	)		—			799
Ending balance			770		4,928			2,539			1,022			23			—			9,282
Ending balance individually evaluated for impairment			224		2,561			—			—			—			—			2,785
Ending balance collectively evaluated for impairment		$	546	$	2,367		$	2,539		$	1,022		$	23		$	—		$	6,497
Loan receivables:
Ending balance			38,665		158,092			58,471			63,339			746			—			319,313
Ending balance individually evaluated for impairment			788		34,532			—			295			—			—			35,615
Ending balance collectively evaluated for impairment		$	37,877	$	123,560		$	58,471		$	63,044		$	746		$	—		$	283,698
		FUSB
		December 31, 2012
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance		$	889	$	16,533		$	306		$	684		$	78		$	201		$	18,691
Charge-offs			1,278		3,395			199			199			16			—			5,087
Recoveries			156		606			79			24			2			—			867
Provision			1,210		472			(18	)		(171	)		2			(201	)		1,294
Ending balance			977		14,216			168			338			66			—			15,765
Ending balance individually evaluated for impairment			406		10,818			—			—			—			—			11,224
Ending balance collectively evaluated for impairment		$	571	$	3,398		$	168		$	338		$	66		$	—		$	4,541
Loan receivables:
Ending balance			42,903		184,858			14,483			38,450			1,037			—			281,731
Ending balance individually evaluated for impairment			1,085		52,893			—			325			—			—			54,303
Ending balance collectively evaluated for impairment		$	41,818	$	131,965		$	14,483		$	38,125		$	1,037		$	—		$	227,428
		ALC
		December 31, 2012
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance		$	—	$	—		$	2,542		$	1,034		$	—		$	—		$	3,576
Charge-offs			—		—			3,249			713			—			—			3,962
Recoveries			—		—			815			40			—			—			855
Provision			—		—			2,625			419			—			—			3,044
Ending balance			—		—			2,733			780			—			—			3,513
Ending balance individually evaluated for impairment			—		—			—			—			—			—			—
Ending balance collectively evaluated for impairment		$	—	$	—		$	2,733		$	780		$	—		$	—		$	3,513
Loan receivables:
Ending balance			—		—			47,001			33,047			—			—			80,048
Ending balance individually evaluated for impairment			—		—			—			—			—			—			—
Ending balance collectively evaluated for impairment		$	—	$	—		$	47,001		$	33,047		$	—		$	—		$	80,048
		FUSB & ALC
		December 31, 2012
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance		$	889	$	16,533		$	2,848		$	1,718		$	78		$	201		$	22,267
Charge-offs			1,278		3,395			3,448			912			16			—			9,049
Recoveries			156		606			894			64			2			—			1,722
Provision			1,210		472			2,607			248			2			(201	)		4,338
Ending balance			977		14,216			2,901			1,118			66			—			19,278
Ending balance individually evaluated for impairment			406		10,818			—			—			—			—			11,224
Ending balance collectively evaluated for impairment		$	571	$	3,398		$	2,901		$	1,118		$	66		$	—		$	8,054
																	—
Loan receivables:
Ending balance			42,903		184,858			61,484			71,497			1,037			—			361,779
Ending balance individually evaluated for impairment			1,085		52,893			—			325			—			—			54,303
Ending balance collectively evaluated for impairment		$	41,818	$	131,965		$	61,484		$	71,172		$	1,037		$	—		$	307,476
Credit Quality Indicators
The Bank has established a credit risk rating system to assess and manage the risk in the loan portfolio. It establishes a uniform framework and common language for assessing and monitoring risk in the portfolio.
The following is a guide for an 8-grade system of credit risk:
	1	Minimal Risk: Borrowers in this category have the lowest risk of any resulting loss. Borrowers are of the highest quality, presently and prospectively.
	2	Better Than Average Risk: Borrowers in the high end of medium range between borrowers who are definitely sound and those with minor risk characteristics.
	3	Moderate Risk: Borrowers in this category have little chance of resulting in a loss. This category should include the average loan, under average economic conditions.
	4	Acceptable Risk: Borrowers in this category have a limited chance of resulting in a loss.
	5	Special Mention (Potential Weakness): Borrowers in this category exhibit potential credit weaknesses or downward trends deserving Bank management’s close attention. If left uncorrected, these potential weaknesses may result in the deterioration of the repayment prospects for the asset or in the Bank’s credit position at some future date. Special mention loans are not adversely classified and do not expose the Bank to sufficient risk to warrant adverse classification.
Included in special mention assets could be workout or turnaround situations, as well as those borrowers previously rated 2-4 who have shown deterioration, for whatever reason, indicating a downgrading from the better grade. The special mention rating is designed to identify a specific level of risk and concern about a loan’s and/or borrower’s quality. Although a special mention asset has a higher probability of default than previously rated categories, its default is not imminent.
	6	Substandard (Definite Weakness – Loss Unlikely): These are borrowers with defined weaknesses that jeopardize the orderly liquidation of debt. A substandard loan is inadequately protected by the current sound worth and paying capacity of the obligor or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy, although no loss of principal is envisioned. There is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified as substandard.
	7	Doubtful: Borrowers classified doubtful have all the weaknesses found in substandard borrowers with the added provision that the weaknesses make collection of debt in full, based on currently existing facts, conditions and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely. The possibility of loss is extremely high, but because of certain important, reasonably specific pending factors that may work to strengthen the assets, the loans’ classification as estimated losses is deferred until a more exact status may be determined. Pending factors include proposed merger, acquisition or liquidation procedures, capital injection, perfecting liens on additional collateral and refinancing plans. Management of borrowers classified doubtful may have demonstrated a history of failing to live up to agreements.
	8	Loss: Borrowers deemed incapable of repayment of unsecured debt. Loans to such borrowers are considered uncollectible and of such little value that continuance as active assets of the Bank is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather it is not prudent to defer writing off these worthless assets, even though partial recovery may be affected in the future.
The table below illustrates the carrying amount of loans by credit quality indicator at September 30, 2013:
		FUSB
		Pass		Special			Substandard			Doubtful			Total
		4-Jan		Mention			6			7
				5
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	4,299	$	947		$	8,404		$	—		$	13,650
Secured by 1-4 family residential properties			29,666		1,841			4,025			—			35,532
Secured by multi-family residential properties			14,532		—			7,553			—			22,085
Secured by non-farm, non-residential properties			97,425		7,178			16,983			—			121,586
Other			771		—			—			—			771
Commercial and industrial loans			31,729		1,269			5,667			—			38,665
Consumer loans			10,173		123			749			—			11,045
Other loans			742		—			4			—			746
Total		$	189,337	$	11,358		$	43,385		$	—		$	244,080
		ALC
		Performing		Nonperforming			Total
		(In Thousands of Dollars)
Loans secured by real estate:
Secured by 1-4 family residential properties		$	27,085	$	722		$	27,807
Consumer loans			46,088		1,338			47,426
Total		$	73,173	$	2,060		$	75,233
The table below illustrates the carrying amount of loans by credit quality indicator at December 31, 2012:
		FUSB
		Pass		Special			Substandard			Doubtful			Total
		4-Jan		Mention			6			7
				5
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	12,653	$	1,235		$	16,747		$	—		$	30,635
Secured by 1-4 family residential properties			31,772		1,546			5,132			—			38,450
Secured by multi-family residential properties			10,776		3,132			10,279			—			24,187
Secured by non-farm, non-residential properties			90,139		8,630			30,466			—			129,235
Other			801		—			—			—			801
Commercial and industrial loans			40,607		419			1,877			—			42,903
Consumer loans			13,394		188			901			—			14,483
Other loans			1,036		—			1			—			1,037
Total		$	201,178	$	15,150		$	65,403		$	—		$	281,731
		ALC
		Performing		Nonperforming			Total
		(In Thousands of Dollars)
Loans secured by real estate:
Secured by 1-4 family residential properties		$	32,036	$	1,011		$	33,047
Consumer loans			46,175		826			47,001
Total		$	78,211	$	1,837		$	80,048
The following table provides an aging analysis of past due loans by class at September 30, 2013:
		FUSB
		As of September 30, 2013
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	233	$	—		$	3,132		$	3,365		$	10,285		$	13,650		$	—
Secured by 1-4 family residential properties			438		236			1,062			1,736			33,796			35,532			—
Secured by multi-family residential Properties			—		—			1,286			1,286			20,799			22,085			—
Secured by non-farm, non-residential properties			693		105			3,579			4,377			117,209			121,586			—
Other			—		—			—			—			771			771			—
Commercial and industrial loans			68		83			55			206			38,459			38,665			—
Consumer loans			128		19			25			172			10,873			11,045			—
Other loans			—		—			—			—			746			746			—
Total		$	1,560	$	443		$	9,139		$	11,142		$	232,938		$	244,080		$	—
		ALC
		As of September 30, 2013
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	—	$	—		$	—		$	—		$	—		$	—		$	—
Secured by 1-4 family residential properties			286		92			763			1,141			26,666			27,807			665
Secured by multi-family residential properties			—		—			—			—			—			—			—
Secured by non-farm, non-residential properties			—		—			—			—			—			—			—
Other			—		—			—			—			—			—			—
Commercial and industrial loans			—		—			—			—			—			—			—
Consumer loans			745		543			1,200			2,488			44,938			47,426			1,188
Other loans			—		—			—			—			—			—			—
Total		$	1,031	$	635		$	1,963		$	3,629		$	71,604		$	75,233		$	1,853
The following table provides an aging analysis of past due loans by class at December 31, 2012:
		FUSB
		As of December 31, 2012
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	456	$	1,126		$	10,329		$	11,911		$	18,724		$	30,635		$	—
Secured by 1-4 family residential properties			1,027		572			1,106			2,705			35,745			38,450			—
Secured by multi-family residential properties			—		—			2,884			2,884			21,303			24,187			—
Secured by non-farm, non-residential properties			210		32			4,930			5,172			124,063			129,235			—
Other			—		—			—			—			801			801			—
Commercial and industrial loans			430		59			480			969			41,934			42,903			—
Consumer loans			407		89			66			562			13,921			14,483			—
Other loans			—		—			—			—			1,037			1,037			—
Total		$	2,530	$	1,878		$	19,795		$	24,203		$	257,528		$	281,731		$	—
		ALC
		As of December 31, 2012
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	—	$	—		$	—		$	—		$	—		$	—		$	—
Secured by 1-4 family residential properties			348		173			1,075			1,596			31,451			33,047			851
Secured by multi-family residential properties			—		—			—			—			—			—			—
Secured by non-farm, non-residential properties			—		—			—			—			—			—			—
Other			—		—			—			—			—			—			—
Commercial and industrial loans			—		—			—			—			—			—			—
Consumer loans			989		609			1,159			2,757			44,244			47,001			720
Other loans			—		—			—			—			—			—			—
Total		$	1,337	$	782		$	2,234		$	4,353		$	75,695		$	80,048		$	1,571
The following table provides an analysis of non-accruing loans by class at September 30, 2013 and December 31, 2012:
		Loans on Non-Accrual Status
		September 30, 2013		December 31, 2012
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	4,330	$	11,456
Secured by 1-4 family residential properties			1,978		2,441
Secured by multi-family residential properties			1,286		2,884
Secured by non-farm, non-residential properties			4,594		5,809
Commercial and industrial loans			425		822
Consumer loans			137		206
Total loans		$	12,750	$	23,618
Impaired Loans
At September 30, 2013, the carrying amount of impaired loans consisted of the following:
		September 30, 2013
		Carrying		Unpaid			Related
		Amount		Principal			Allowances
				Balance
		(In Thousands of Dollars)
Impaired loans with no related allowance recorded
Loans secured by real estate:
Construction, land development and other land loans		$	6,570	$	6,570		$	—
Secured by 1-4 family residential properties			295		295			—
Secured by multi-family residential properties			1,054		1,054			—
Secured by non-farm, non-residential properties			14,498		14,498			—
Commercial and industrial			564		564			—
Total loans with no related allowance recorded		$	22,981	$	22,981		$	—
Impaired loans with an allowance recorded
Loans secured by real estate:
Construction, land development and other land loans		$	1,461	$	1,461		$	263
Secured by multi-family residential properties			6,499		6,499			1,699
Secured by non-farm, non-residential properties			4,450		4,450			599
Commercial and industrial			224		224			224
Total loans with an allowance recorded		$	12,634	$	12,634		$	2,785
Total impaired loans
Loans secured by real estate:
Construction, land development and other land loans		$	8,031	$	8,031		$	263
Secured by 1-4 family residential properties			295		295			—
Secured by multi-family residential properties			7,553		7,553			1,699
Secured by non-farm, non-residential properties			18,948		18,948			599
Commercial and industrial			788		788			224
Total impaired loans		$	35,615	$	35,615		$	2,785
At December 31, 2012, the carrying amount of impaired loans consisted of the following:
		December 31, 2012
		Carrying		Unpaid			Related
		Amount		Principal			Allowances
				Balance
		(In Thousands of Dollars)
Impaired loans with no related allowance recorded
Loans secured by real estate:
Construction, land development and other land loans		$	2,645	$	2,645		$	—
Secured by 1-4 family residential properties			325		325			—
Secured by multi-family residential properties			3,027		3,027			—
Secured by non-farm, non-residential properties			21,471		21,471			—
Commercial and industrial			655		655			—
Total loans with no related allowance recorded		$	28,123	$	28,123		$	—
Impaired loans with an allowance recorded
Loans secured by real estate:
Construction, land development and other land loans		$	12,658	$	12,658		$	7,453
Secured by multi-family residential properties			7,252		7,252			1,865
Secured by non-farm, non-residential properties			5,840		5,840			1,500
Commercial and industrial			430		430			406
Total loans with an allowance recorded		$	26,180	$	26,180		$	11,224
Total impaired loans
Loans secured by real estate:
Construction, land development and other land loans		$	15,303	$	15,303		$	7,453
Secured by 1-4 family residential properties			325		325			—
Secured by multi-family residential properties			10,279		10,279			1,865
Secured by non-farm, non-residential properties			27,311		27,311			1,500
Commercial and industrial			1,085		1,085			406
Total impaired loans		$	54,303	$	54,303		$	11,224
The average net investment in impaired loans and interest income recognized and received on impaired loans at September 30, 2013 and December 31, 2012 were as follows:
		September 30, 2013
		Average		Interest			Interest
		Recorded		Income			Income
		Investment		Recognized			Received
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	11,656	$	134		$	135
Secured by 1-4 family residential properties			308		5			6
Secured by multi-family residential properties			9,075		298			304
Secured by non-farm, non-residential properties			23,527		741			726
Commercial and industrial			1,061		28			28
Total impaired loans		$	45,627	$	1,206		$	1,199
		December 31, 2012
		Average		Interest			Interest
		Recorded		Income			Income
		Investment		Recognized			Received
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	18,283	$	546		$	598
Secured by 1-4 family residential properties			146		10			10
Secured by multi-family residential properties			4,942		483			455
Secured by non-farm, non-residential properties			29,627		1,452			1,477
Commercial and industrial			1,222		38			42
Total impaired loans		$	54,220	$	2,529		$	2,582
Loans on which the accrual of interest has been discontinued amounted to $12,750,648 and $23,618,330 at September 30, 2013 and December 31, 2012, respectively. If interest on those loans had been accrued, such income would have approximated $333,637 and $1,058,377 for the quarter ended September 30, 2013 and the year ended December 31, 2012, respectively. Interest income actually recorded on those loans amounted to $30,880 and $157,601 for the quarter ended September 30, 2013 and the year ended December 31, 2012, respectively. Accruing loans past due 90 days or more amounted to $1,853,276 and $1,570,548 at September 30, 2013 and December 31, 2012, respectively.
Troubled Debt Restructurings
Loans are considered restructured loans if concessions have been granted to borrowers that are experiencing financial difficulty. The concessions granted generally involve the modification of terms of the loan, such as changes in payment schedule or interest rate, which generally would not otherwise be considered. Restructured loans can involve loans remaining on non-accrual, moving to non-accrual or continuing on accrual status, depending on the individual facts and circumstances of the borrower. Non-accrual restructured loans are included and treated with all other non-accrual loans. In addition, all accruing restructured loans are reported as troubled debt restructurings. Generally, restructured loans remain on non-accrual until the customer has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on non-accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on non-accrual status. Based on the above, the Company had $6,116,647 and $12,397,049 of non-accruing loans that were restructured and remained on non-accrual status at September 30, 2013 and December 31, 2012, respectively.
The following table provides the number of loans modified in a troubled debt restructuring by loan portfolio as of September 30, 2013 and December 31, 2012, as well as the pre- and post-modification principal balance as of September 30, 2013 and December 31, 2012:
		September 30, 2013								December 31, 2012
		Number		Pre-			Post-			Number			Pre-			Post-
		of Loans		Modification			Modification			of Loans			Modification			Modification
				Outstanding			Principal						Outstanding			Principal
				Principal			Balance						Principal			Balance
				Balance									Balance
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans			8	$	12,580		$	5,279			10		$	11,267		$	9,988
Secured by 1-4 family residential properties			13		870			591			4			596			586
Secured by non-farm, non-residential properties			8		1,892			1,633			6			1,811			1,586
Commercial loans			3		371			331			4			380			356
Total			32	$	15,713		$	7,834			24		$	14,054		$	12,516
The following table provides the number of loans modified in a troubled debt restructuring that have subsequently defaulted, by loan portfolio, as of September 30, 2013 and December 31, 2012:
		September 30, 2013					December 31, 2012
		Number		Recorded			Number			Recorded
		of Loans		Investment			of Loans			Investment
		(In Thousands of Dollars)
Troubled debt restructurings that have subsequently defaulted:
Construction, land development and other land loans			2	$	2,083			6		$	7,062
Secured by non-farm, non-residential properties			4		1,073			2			433
Commercial loans			—		—			2			68
Total			6	$	3,156			10		$	7,563
Restructured loan modifications may include payment schedule modifications, interest rate concessions, maturity date extensions, modification of note structure, principal reduction or some combination of these concessions.
During the quarter ended September 30, 2013 and the year ended December 31, 2012, restructured loan modifications of loans secured by real estate and commercial and industrial loans primarily included maturity date extensions and payment schedule modifications.
The change in troubled debt restructuring from December 31, 2012 to September 30, 2013 was as follows:
		September 30,		December 31,			Change
		2013		2012
		(In Thousands of Dollars)
Loans secured by real estate:
Construction, land development and other land loans		$	5,279	$	9,988		$	(4,709	)
Secured by 1-4 family residential properties			591		586			5
Secured by non-farm, non-residential properties			1,633		1,586			47
Commercial and industrial loans			331		356			(25	)
Total		$	7,834	$	12,516			(4,682	)
All loans $500,000 and over, modified in a troubled debt restructuring and rated substandard or lower, are evaluated for impairment. The nature and extent of impairment of restructured loans, including those that have experienced a subsequent payment default, is considered in the determination of an appropriate level of allowance for loan losses. This evaluation resulted in an allowance for loan losses on these restructured loans of $486,349 and $6,322,593 at September 30, 2013 and December 31, 2012, respectively.

Other_Real_Estate_Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2013
Banking And Thrift [Abstract]	'
Other Real Estate Owned	'
	9	OTHER REAL ESTATE OWNED
	Other real estate and certain other assets acquired in foreclosure are reported at the lower of the investment in the loan or fair value of the property less estimated costs to sell. The following table summarizes foreclosed property activity for the nine months ended September 30, 2013 and 2012.
			Nine Months Ended September 30, 2013
			FUSB			ALC			TOTAL
			(Dollars in Thousands)
	Balance December 31, 2012		$	11,089		$	2,197		$	13,286
	Transfers from loans			1,770			426			2,196
	Sales proceeds			(1,876	)		(905	)		(2,781	)
	Gross gains			62			28			90
	Gross losses			(155	)		(687	)		(842	)
	Net losses			(93	)		(659	)		(752	)
	Impairment			(368	)		(209	)		(577	)
	Balance September 30, 2013		$	10,522		$	850		$	11,372
			Nine Months Ended September 30, 2012
			FUSB			ALC			TOTAL
			(Dollars in Thousands)
	Balance December 31, 2011		$	12,606		$	4,168		$	16,774
	Transfers from loans			5,337			682			6,019
	Sales proceeds			(3,670	)		(1,242	)		(4,912	)
	Gross gains			11			63			74
	Gross losses			(528	)		(578	)		(1,106	)
	Net losses			(517	)		(515	)		(1,032	)
	Impairment			(2,735	)		(506	)		(3,241	)
	Balance September 30, 2012		$	11,021		$	2,587		$	13,608
	Valuation adjustments are primarily recorded in other non-interest expense; adjustments are also recorded as a charge to the allowance for loan losses if incurred within 60 days after the date of transfer from loans. Valuation adjustments are primarily post-foreclosure write-downs that are a result of continued declining property values based on updated appraisals or other indications of value, such as offers to purchase.

ShortTerm_Borrowings

Short-Term Borrowings	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Short-Term Borrowings	'
	10	SHORT-TERM BORROWINGS
	Short-term borrowings consist of federal funds purchased and securities sold under repurchase agreements. Federal funds purchased generally mature within one to four days. There were no federal funds purchased outstanding at September 30, 2013 or December 31, 2012.
	Securities sold under repurchase agreements, which are secured borrowings, generally are reflected at the amount of cash received in connection with the transaction. The Company may be required to provide additional collateral based on the fair value of the underlying securities. The Company monitors the fair value of the underlying securities on a daily basis. Securities sold under repurchase agreements at September 30, 2013 and December 31, 2012 were $1,777,000 and $638,000, respectively.
	At September 30, 2013, the Bank had $17.8 million in available federal fund lines from correspondent banks.

LongTerm_Borrowings

Long-Term Borrowings	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Long-Term Borrowings	'
	11	LONG-TERM BORROWINGS
	The Company uses FHLB advances as an alternative to funding sources with similar maturities, such as certificates of deposit or other deposit programs. These advances generally offer more attractive rates when compared to other mid-term financing options. They are also flexible, allowing the Company to quickly obtain the necessary maturities and rates that best suit its overall asset/liability strategy. At September 30, 2013, the Company had advances outstanding of $5.0 million and assets pledged of $5.3 million. At December 31, 2012, no advances were outstanding, and no assets were pledged.
	At September 30, 2013, the Bank had $163.0 million in available credit from the FHLB.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	12	INCOME TAXES
	The Company files a consolidated income tax return with the federal government and the State of Alabama. ALC files a Mississippi state income tax return related to operations from its Mississippi branches. The Company is currently open to audit under the statute of limitations by the Internal Revenue Service and the states in which it files for the years ended December 31, 2009 through 2012.
	As of September 30, 2013, 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 September 30, 2013. As of September 30, 2013, the Company had accrued no interest and no penalties related to uncertain tax positions.
	The consolidated tax expense (benefit) differed from the amount computed by applying the federal statutory income tax rate of 34.0%, as described in the following table:
			Nine Months Ended
			September 30,			September 30,
			2013			2012
			(Dollars in Thousands)
	Income tax expense at federal statutory rate		$	1,421		$	499
	Increase (decrease) resulting from:
	Tax-exempt interest			(292	)		(274	)
	State income tax expense, net of federal income taxes			163			43
	Other			(86	)		(111	)
	Total		$	1,206		$	157
	The Company’s determination of the realization of the net deferred tax asset is based on its assessment of all available positive and negative evidence. The Company is currently in a three-year cumulative loss position, which represents negative evidence. As of September 30, 2013, of the $7.1 million net deferred tax asset, $3.5 million related to the provision for loan losses, $1.8 million related to impairment of OREO and $1.6 million resulted from deferred compensation. As of December 31, 2012, of the $9.5 million net deferred tax asset, $7.3 million related to the provision for loan losses, $2.3 million related to impairment of OREO and $1.5 million resulted from deferred compensation.
	At September 30, 2013, positive evidence supporting the realization of the deferred tax asset included a strong earnings history, exclusive of loan loss provisions and other real estate write-downs, which created the most significant portion of the deferred asset. The majority of these provisions and write-downs resulted from one type of loan – real estate development. The Company believes that impaired loans of this type have been identified and adequately reserved. Management has projected taxable income over the next five years resulting from reduced provisions for loan losses and reduced write-downs of OREO. Except in unusual circumstances, the Company no longer invests in these types of loans.
	Along with the taxable income in 2012 and the first, second and third quarters of 2013, the Company has projected future taxable income over the next five tax years, although there can be no assurance that such income will be realized due to unanticipated changes in economic, competitive and other factors. Further positive evidence includes the Company’s strong capital position and history of significant pre-tax earnings, which the Company believes outweighs the negative evidence of recent pre-tax losses. Accordingly, a valuation allowance has not been established as of September 30, 2013.

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Reporting	'
	13	SEGMENT REPORTING
	Under ASC Topic 280, Segment Reporting, certain information is disclosed for the two reportable operating segments of the Company. The reportable segments were determined using the internal management reporting system. They are composed of USBI’s significant subsidiaries. The accounting policies for each segment are the same as those described in Note 2, “Summary of Significant Accounting Policies,” of the Notes to Consolidated Financial Statements in USBI’s Annual Report on Form 10-K for the period ended December 31, 2012. The segment results include certain overhead allocations and intercompany transactions that were recorded at current market prices. All intercompany transactions have been eliminated to determine the consolidated balances. The results for the two reportable segments of the Company are included in the following table:
			FUSB			ALC		All Other		Eliminations			Consolidated
			(Dollars in Thousands)
	For the three months ended September 30, 2013:
	Net interest income		$	4,190		$	3,376	$	2	$	—		$	7,568
	Provision for loan losses			(300	)		540		—		—			240
	Total non-interest income			913			360		1,267		(1,249	)		1,291
	Total non-interest expense			4,962			2,322		308		(227	)		7,365
	Income before income taxes			441			874		961		(1,022	)		1,254
	Provision for income taxes			12			337		1		—			350
	Net income		$	429		$	537	$	960	$	(1,022	)	$	904
	Other significant items:
	Total assets		$	561,325		$	70,809	$	75,422	$	(147,554	)	$	560,002
	Total investment securities			156,772			—		80		—			156,852
	Total loans, net			292,180			67,207		—		(54,609	)		304,778
	Investment in subsidiaries			784			—		70,386		(71,165	)		5
	Fixed asset additions			(6	)		8		—		—			2
	Depreciation expense			131			49		—		—			180
	Total interest income from external customers			4,096			4,174		—		—			8,270
	Total interest income from affiliates			798			—		3		(801	)		—
	For the nine months ended September 30, 2013:
	Net interest income		$	12,706		$	10,355	$	7	$	—		$	23,068
	Provision for loan losses			(462	)		1,261		—		—			799
	Total non-interest income			3,239			1,045		3,778		(3,920	)		4,142
	Total non-interest expense			14,247			7,984		668		(666	)		22,233
	Income before income taxes			2,160			2,155		3,117		(3,254	)		4,178
	Provision for income taxes			371			833		2		—			1,206
	Net income		$	1,789		$	1,322	$	3,115	$	(3,254	)	$	2,972
	Other significant items:
	Fixed asset additions		$	56		$	26	$	—	$	—		$	82
	Depreciation expense			392			128		—		—			520
	Total interest income from external customers			12,494			12,802		—		—			25,296
	Total interest income from affiliates			2,447			—		7		(2,454	)		—
	For the three months ended September 30, 2012:
	Net interest income		$	4,617		$	3,675	$	5	$	—		$	8,297
	Provision for loan losses			—			492		—		—			492
	Total non-interest income			1,017			361		1,610		(1,535	)		1,453
	Total non-interest expense			4,803			2,562		394		(197	)		7,562
	Income before income taxes			831			982		1,221		(1,338	)		1,696
	Provision for income taxes			136			379		2		—			517
	Net income		$	695		$	603	$	1,219	$	(1,338	)	$	1,179
	Other significant items:
	Total assets		$	584,884		$	79,629	$	74,280	$	(154,471	)	$	584,322
	Total investment securities			114,688			—		75		—			114,763
	Total loans, net			335,487			73,565		—		(64,319	)		344,733
	Investment in subsidiaries			802			—		69,080		(69,877	)		5
	Fixed asset additions			99			32		—		—			131
	Depreciation expense			127			38		—		—			165
	Total interest income from external customers			4,701			4,627		—		—			9,328
	Total interest income from affiliates			952			—		5		(957	)		—
	For the nine months ended September 30, 2012:
	Net interest income		$	14,548		$	10,856	$	14	$	—		$	25,418
	Provision for loan losses			1,523			1,652		—		—			3,175
	Total non-interest income			2,987			1,020		2,254		(2,203	)		4,058
	Total non-interest expense			16,506			8,124		763		(561	)		24,832
	Income before income taxes			(494	)		2,100		1,505		(1,642	)		1,469
	Provision for (benefit from) income taxes			(660	)		812		5		—			157
	Net income		$	166		$	1,288	$	1,500	$	(1,642	)	$	1,312
	Other significant items:
	Fixed asset additions		$	211		$	209	$	—	$	—		$	420
	Depreciation expense			408			116		—		—			524
	Total interest income from external customers			15,296			13,790		—		—			29,086
Total interest income from affiliates			2,935			—		13		(2,948	)		—

Guarantees_Commitments_and_Con

Guarantees, Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Guarantees, Commitments and Contingencies	'
	14	GUARANTEES, COMMITMENTS AND CONTINGENCIES
	The Bank’s exposure to credit loss in the event of nonperformance by the other party for commitments to make loans and standby letters of credit is represented by the contractual amount of those instruments. The Bank uses the same credit policies in making these commitments as it does for on-balance sheet instruments. For interest rate swap transactions and commitments to purchase or sell securities for forward delivery, the contract or notional amounts do not represent exposure to credit loss. The Bank controls the credit risk of these derivative instruments through credit approvals, limits and monitoring procedures. Certain derivative contracts have credit risk for the carrying value plus the amount to replace such contracts in the event of counterparty default. All of the Bank’s financial instruments are held for risk management and not for trading purposes. During the quarters ended September 30, 2013 and 2012, there were no credit losses associated with derivative contracts.
	In the normal course of business, there are certain outstanding commitments and contingent liabilities, such as commitments to extend credit, letters of credit and others, that are not included in the consolidated financial statements. The financial instruments involve, to varying degrees, elements of credit and interest rate risk in excess of amounts recognized in the condensed consolidated financial statements. A summary of these commitments and contingent liabilities is presented below:
			September 30,		December 31,
			2013		2012
			(Dollars in Thousands)
	Standby Letters of Credit		$	946	$	1,092
	Commitments to Extend Credit		$	31,363	$	32,123
	Standby letters of credit are contingent commitments issued by the Bank generally to guarantee the performance of a customer to a third party. The Bank has recourse against the customer for any amount that it is required to pay to a third party under a standby letter of credit. Revenues are recognized over the lives of the standby letters of credit. The potential amount of future payments that the Bank could be required to make under its standby letters of credit at September 30, 2013 and December 31, 2012 was $946,000 and $1,092,000, respectively, representing the Bank’s total credit risk.
	Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, is based on management’s credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, property, plant and equipment and income-producing commercial properties.
	Commitments to purchase securities for delayed delivery require the Bank to purchase a specified security at a specified price for delivery on a specified date. Similarly, commitments to sell securities for delayed delivery require the Bank to sell a specified security at a specified price for delivery on a specified date. Market risk arises from potential movements in security values and interest rates between the commitment and delivery dates. At September 30, 2013 and December 31, 2012, there were no outstanding commitments to purchase and sell securities for delayed delivery.
	Litigation
	On September 27, 2007, Malcomb Graves Automotive, LLC (“Graves Automotive”), Malcomb Graves and Tina Graves filed a lawsuit in the Circuit Court of Shelby County, Alabama against USBI, the Bank, ALC and their respective directors and officers seeking an unspecified amount of compensatory and punitive damages. A former employee of ALC, Corey Mitchell, was named as a co-defendant, and ALC and the Bank filed a crossclaim against him seeking, among other relief, defense and indemnification for any damages suffered in the underlying lawsuit. The underlying complaint alleged that the defendants committed fraud in misrepresenting to Graves Automotive the amounts that Graves Automotive owed on certain loans and failing to credit Graves Automotive properly for certain loans. The defendants moved to compel arbitration, and the trial court denied the defendants’ motion. The defendants appealed this decision, and, on September 29, 2010, the Alabama Supreme Court affirmed the trial court’s denial of defendants’ motion. Following the return of the case to the active docket, on November 30, 2010, ALC and the Bank moved to dismiss the lawsuit. In response to this motion to dismiss, on June 15, 2011, the Circuit Court dismissed all claims against USBI, the Bank and their respective directors and officers and all claims that were brought by Malcomb Graves and Tina Graves in their individual capacities. The Circuit Court also dismissed Graves Automotive’s claims for conversion and negligent supervision against ALC and ordered Graves Automotive to re-plead its fraud allegations against ALC with more particularity. On September 15, 2011, Graves Automotive filed a third amended complaint in response to the Circuit Court’s June 15, 2011 order. In its third amended complaint, Graves Automotive asserted claims against ALC for breach of contract, fraud, unjust enrichment and conversion. ALC moved to dismiss the third amended complaint on many of the same grounds as set forth in its previous motion to dismiss. On October 13, 2011, the Circuit Court dismissed Graves Automotive’s conversion claim and again ordered Graves Automotive to re-plead its fraud claims with more particularity, this time within 60 days. On December 12, 2011, Graves Automotive filed its fourth amended complaint, this time asserting only two counts, breach of contract and unjust enrichment. Despite removing the fraud claims, the fourth amended complaint still requests punitive damages. On January 11, 2012, ALC filed a motion to dismiss the fourth amended complaint and to strike Graves Automotive’s request for punitive damages. This motion was heard on November 27, 2012, and the Circuit Court struck the punitive damages claim but allowed the breach of contract and unjust enrichment claims to go forward. The Circuit Court conducted a status conference on September 24, 2013 and ordered on September 30, 2013, as a result of the conference, Graves Automotive to produce all documents supporting its contentions within 30 days. Graves Automotive has failed to do so. ALC also has made a nominal settlement offer to avoid the costs associated with additional litigation. ALC has yet to receive a response to this offer. Although the ultimate outcome of this matter remains unknown, ALC continues to deny the allegations against it in the underlying lawsuit with respect to the remaining claims and intends to vigorously defend itself in this matter.
	USBI and its subsidiaries also are parties to other litigation, and the Company intends to vigorously defend itself in all such litigation. In the opinion of the Company, based on review and consultation with legal counsel, the outcome of such other litigation should not have a material adverse effect on the Company’s consolidated financial statements or results of operations.
	Contingencies Resolved Subsequent to Period End
	On February 17, 2011, Wayne Allen Russell, Jr. (“Russell”) filed a lawsuit in the Circuit Court of Tuscaloosa County, Alabama against the Bank and Bill Morgan, who served as the Bank’s Business Development Officer. The allegations in the lawsuit relate to a mortgage on a parcel of real estate, executed by Russell in favor of the Bank as security for a loan, and certain related transactions, including foreclosure proceedings executed by the Bank. Additionally, on June 17, 2011, Mr. Russell’s wife, Rebecca Russell, in response to a lawsuit filed against Mrs. Russell by the Bank, filed a counterclaim against the Bank seeking compensatory and punitive damages, asserting that she was induced to mortgage a rental dwelling owned by her, the proceeds of which were paid upon certain obligations owed to the Bank by her husband, and that the Bank had orally agreed to refinance her loan as a part of an alleged refinancing promise by the Bank with respect to the obligations of Mr. Russell. On October 29, 2012, the Court granted summary judgment in favor of the Bank and Mr. Morgan with respect to all claims asserted in the consolidated lawsuits, and a subsequent motion to alter, amend or vacate filed by Mr. and Mrs. Russell was denied by operation of law. On March 25, 2013, Mr. and Mrs. Russell filed a Notice of Appeal to the Supreme Court of Alabama. On October 25, 2013, the Alabama Court of Civil Appeals affirmed the ruling of the lower court and the grant of summary judgment in favor of the Bank without an opinion. This concluded the appeal and the lawsuit.
	On or about June 1, 2012, a former employee filed a complaint against the Bank with the Occupational Safety and Health Administration (“OSHA”) alleging violations of Section 806 of the Corporate and Criminal Fraud Accountability Act, 18 U.S.C. § 1514A (“Section 806”), and Section 1057 of the Consumer Financial Protection Act, 12 U.S.C. § 5567, in connection with his separation from the Bank in April 2012. Based on its investigation, OSHA concluded it had no reasonable cause to believe the statutes were violated. As was his right, however, the former employee timely requested a hearing before an Administrative Law Judge (“ALJ”) and filed an amended complaint in that forum. The Bank filed a motion to dismiss the amended complaint (in lieu of an answer), and the motion was granted as to all claims other than the claim alleging a violation of Section 806. On November 12, 2013, the Bank entered into a settlement agreement with the former employee to resolve the matter. In connection with the settlement agreement, any and all remaining claims alleged by the former employee against the Bank are due to be dismissed, with prejudice.

Recent_Accounting_Pronouncemen1

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Changes And Error Corrections [Abstract]	'
Disclosures about Offsetting Assets and Liabilities	'
	In December 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2011-11, Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities. The amendments in this ASU affect all entities that have financial instruments and derivative instruments that are either (1) offset in accordance with either Accounting Standards Codification (“ASC”) Section 210-20-45 or Section 815-10-45 or (2) subject to an enforceable master netting arrangement or similar agreement. The requirements amend the disclosure requirements on offsetting in ASC Section 210-20-50. This information will enable users of an entity’s financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments in the scope of this ASU. An entity is required to apply the amendments for annual reporting periods beginning on or after January 1, 2013 and interim periods within those annual periods. An entity should provide the disclosures required by those amendments retrospectively for all comparative periods presented. The adoption of this guidance, which involves disclosure only, did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
Comprehensive Income	'
	In February 2013, the FASB issued ASU No. 2013-02, which updated ASC Topic 220, Comprehensive Income, which requires an entity to report the effect of significant reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required under GAAP to be reclassified in its entirety to net income. For other amounts that are not reclassified in their entirety to net income, an entity is required to cross-reference other disclosures required under GAAP that provide additional detail about those amounts. ASU No. 2013-02 is effective for annual reporting periods beginning on or after December 15, 2012 and interim periods within those annual periods. The adoption of ASU No. 2013-02 did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
Fair Value Measurement	'
	The Company follows the provisions of ASC Topic 820, Fair Value Measurements, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements.
	Fair Value Hierarchy
	The assumptions used in the estimation of the fair value of the Company’s financial instruments are detailed below. Where quoted prices are not available, fair values are based on estimates using discounted cash flows and other valuation techniques. The use of discounted cash flows can be significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. The following disclosures should not be considered a surrogate of the liquidation value of the Company, but rather represent a good-faith estimate of the increase or decrease in value of financial instruments held by the Company since purchase, origination or issuance.
Accounting by Creditors for Impairment of a Loan	'
	Loan impairment is reported when full payment under the loan terms is not expected. Impaired loans are carried at the present value of estimated future cash flows using the loan’s existing rate or the fair value of collateral if the loan is collateral dependent. A portion of the allowance for loan losses is allocated to impaired loans if the value of such loans is deemed to be less than the unpaid balance. If these allocations cause the allowance for loan losses to increase, such increase is reported as a component of the provision for loan losses. When an impaired loan is determined to be collateral dependent, the fair value is determined through the utilization of a third-party appraisal. It is the policy of the Company to update appraisals every 18-24 months. The types of collateral influence the frequency of obtaining updated appraisals. Management knows the market trends of collateral values well and monitors trends in sales and valuations in all of the various categories of collateral. These trends influence how often new appraisals are obtained within the 18-24 month timeframe. An example would be loans collateralized by residential subdivision lots. The values of this type of collateral have been volatile in recent years, and, therefore, appraisals are generally updated at the lower end of the timeframe (i.e., closer to 18 months), while timberland appraisals which have been less volatile in recent years would be updated closer to the upper end of the timeframe (i.e., closer to 24 months). Any observed trend indicating significant changes in valuations would require updated appraisals. Based on experience, current appraisals are discounted 9% for estimated costs associated with foreclosures and costs to sell. If a loan is evaluated for impairment under ASC Topic 310-10-35, Accounting by Creditors for Impairment of a Loan, and the appraisal is outdated, a new appraisal is ordered. If the new appraisal is not received in sufficient time to assess any required impairment to meet financial reporting obligations, the old appraisal may be adjusted to reflect values observed in similar properties. In recent years, discounts have ranged from 20% to 30% and have been based on the most recent valuation/appraisal information available related to that particular type of loan/collateral. After a new appraisal is obtained, the analysis is updated to reflect the new valuation. Loan losses are charged against the allowance when management believes that the uncollectibility of a loan is confirmed. Loans, net of specific allowances, subject to this evaluation amounted to $9,848,600 and $14,956,079 as of September 30, 2013 and December 31, 2012, respectively. This valuation would be considered Level 3, consisting of appraisals of underlying collateral and discounted cash flow analysis.
Financial Instruments	'
	ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized on the face of the balance sheet, for which it is practicable to estimate that value. The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:
	Cash, due from banks and federal funds sold: The carrying amount of cash, due from banks and federal funds sold approximates fair value.
	Federal Home Loan Bank (“FHLB”): Based on the redemption provision of the FHLB, the stock has no quoted market value and is carried at cost.
	Securities: Fair values of securities are based on quoted market prices where available. If quoted market prices are not available, estimated fair values are based on market prices of comparable instruments.
	Accrued interest receivable and payable: The carrying amount of accrued interest approximates fair value.
	Loans, net: For variable-rate loans, fair values are based on carrying values. Fixed-rate commercial loans, other installment loans and certain real estate mortgage loans are valued using discounted cash flows. The discount rate used to determine the present value of these loans is based on interest rates currently being charged by the Company on comparable loans as to credit risk and term.
	Demand and savings deposits: The fair values of demand deposits are equal to the carrying value of such deposits. Demand deposits include non-interest bearing demand deposits, savings accounts, NOW accounts and money market demand accounts.
	Time deposits: The fair values of relatively short-term time deposits are equal to their carrying values. Discounted cash flows are used to value long-term time deposits. The discount rate used is based on interest rates currently being offered by the Company on comparable deposits as to amount and term.
	Short-term borrowings: These borrowings may consist of federal funds purchased, securities sold under agreements to repurchase and the floating rate borrowings from the FHLB account. Due to the short-term nature of these borrowings, fair values approximate carrying values.
	Long-term borrowings: The fair value of this debt is estimated using discounted cash flows based on the Company’s current incremental borrowing rate for similar types of borrowing arrangements as of September 30, 2013 and December 31, 2012.
	Off-balance sheet instruments: The carrying amount of commitments to extend credit and standby letters of credit approximates fair value. The carrying amount of the off-balance sheet financial instruments is based on fees currently charged to enter into such agreements.
Consolidation	'
	The Company has determined that these structures require evaluation as a variable interest entity (“VIE”) under ASC Topic 810, Consolidation. The Company consolidates one of the funds in which it has a 99.9% limited partnership interest. The resulting financial impact to the Company of the consolidation was a net increase to total assets of approximately $53,388 as of September 30, 2013.
Accounting for Tax Benefits Resulting from Investments in Affordable Housing Projects	'
	The remaining limited partnership investments are unconsolidated and are accounted for under the cost method as allowed under ASC Topic 325, Accounting for Tax Benefits Resulting from Investments in Affordable Housing Projects. The Company amortizes the excess of carrying value of the investment over its estimated residual value during the period in which tax credits are allocated to the investors. The Company’s maximum exposure to future loss related to these limited partnerships is limited to the $818,999 recorded investment.
Segment Reporting	'
	Under ASC Topic 280, Segment Reporting, certain information is disclosed for the two reportable operating segments of the Company. The reportable segments were determined using the internal management reporting system. They are composed of USBI’s significant subsidiaries. The accounting policies for each segment are the same as those described in Note 2, “Summary of Significant Accounting Policies,” of the Notes to Consolidated Financial Statements in USBI’s Annual Report on Form 10-K for the period ended December 31, 2012. The segment results include certain overhead allocations and intercompany transactions that were recorded at current market prices. All intercompany transactions have been eliminated to determine the consolidated balances. The results for the two reportable segments of the Company are included in the following table:
		FUSB			ALC		All Other		Eliminations			Consolidated
		(Dollars in Thousands)
	For the three months ended September 30, 2013:
	Net interest income	$	4,190		$	3,376	$	2	$	—		$	7,568
	Provision for loan losses		(300	)		540		—		—			240
	Total non-interest income		913			360		1,267		(1,249	)		1,291
	Total non-interest expense		4,962			2,322		308		(227	)		7,365
	Income before income taxes		441			874		961		(1,022	)		1,254
	Provision for income taxes		12			337		1		—			350
	Net income	$	429		$	537	$	960	$	(1,022	)	$	904
	Other significant items:
	Total assets	$	561,325		$	70,809	$	75,422	$	(147,554	)	$	560,002
	Total investment securities		156,772			—		80		—			156,852
	Total loans, net		292,180			67,207		—		(54,609	)		304,778
	Investment in subsidiaries		784			—		70,386		(71,165	)		5
	Fixed asset additions		(6	)		8		—		—			2
	Depreciation expense		131			49		—		—			180
	Total interest income from external customers		4,096			4,174		—		—			8,270
	Total interest income from affiliates		798			—		3		(801	)		—
	For the nine months ended September 30, 2013:
	Net interest income	$	12,706		$	10,355	$	7	$	—		$	23,068
	Provision for loan losses		(462	)		1,261		—		—			799
	Total non-interest income		3,239			1,045		3,778		(3,920	)		4,142
	Total non-interest expense		14,247			7,984		668		(666	)		22,233
	Income before income taxes		2,160			2,155		3,117		(3,254	)		4,178
	Provision for income taxes		371			833		2		—			1,206
	Net income	$	1,789		$	1,322	$	3,115	$	(3,254	)	$	2,972
	Other significant items:
	Fixed asset additions	$	56		$	26	$	—	$	—		$	82
	Depreciation expense		392			128		—		—			520
	Total interest income from external customers		12,494			12,802		—		—			25,296
	Total interest income from affiliates		2,447			—		7		(2,454	)		—
	For the three months ended September 30, 2012:
	Net interest income	$	4,617		$	3,675	$	5	$	—		$	8,297
	Provision for loan losses		—			492		—		—			492
	Total non-interest income		1,017			361		1,610		(1,535	)		1,453
	Total non-interest expense		4,803			2,562		394		(197	)		7,562
	Income before income taxes		831			982		1,221		(1,338	)		1,696
	Provision for income taxes		136			379		2		—			517
	Net income	$	695		$	603	$	1,219	$	(1,338	)	$	1,179
	Other significant items:
	Total assets	$	584,884		$	79,629	$	74,280	$	(154,471	)	$	584,322
	Total investment securities		114,688			—		75		—			114,763
	Total loans, net		335,487			73,565		—		(64,319	)		344,733
	Investment in subsidiaries		802			—		69,080		(69,877	)		5
	Fixed asset additions		99			32		—		—			131
	Depreciation expense		127			38		—		—			165
	Total interest income from external customers		4,701			4,627		—		—			9,328
	Total interest income from affiliates		952			—		5		(957	)		—
	For the nine months ended September 30, 2012:
	Net interest income	$	14,548		$	10,856	$	14	$	—		$	25,418
	Provision for loan losses		1,523			1,652		—		—			3,175
	Total non-interest income		2,987			1,020		2,254		(2,203	)		4,058
	Total non-interest expense		16,506			8,124		763		(561	)		24,832
	Income before income taxes		(494	)		2,100		1,505		(1,642	)		1,469
	Provision for (benefit from) income taxes		(660	)		812		5		—			157
	Net income	$	166		$	1,288	$	1,500	$	(1,642	)	$	1,312
	Other significant items:
	Fixed asset additions	$	211		$	209	$	—	$	—		$	420
	Depreciation expense		408			116		—		—			524
	Total interest income from external customers		15,296			13,790		—		—			29,086
	Total interest income from affiliates		2,935			—		13		(2,948	)		—

Net_Income_Per_Share_Tables

Net Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Basic and Diluted Net Income Per Share Calculations	'
	The following table represents the basic and diluted net income per share calculations for the three- and nine-month periods ended September 30, 2013 and 2012 (in thousands of dollars, except per share data):
				Weighted		Basic and
				Average		Diluted Net
		Net		Shares		Income
		Income		Outstanding		Per Share
	For the Three Months Ended:
	September 30, 2013	$	904		6,027,562	$	0.15
	September 30, 2012	$	1,179		6,023,124	$	0.2
	For the Nine Months Ended:
	September 30, 2013	$	2,972		6,024,935	$	0.49
	September 30, 2012	$	1,312		6,022,648	$	0.22

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Balances of Available-for-Sale Securities Measured at Fair Value on Recurring Basis	'
	The following table presents the balances of available-for-sale securities measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012.
		Fair Value Measurements at September 30, 2013 Using
		Totals		Quoted			Significant		Significant
		At		Prices in			Other		Unobservable
		September 30,		Active			Observable		Inputs
		2013		Markets For			Inputs		(Level 3)
				Identical			(Level 2)
				Assets
				(Level 1)
		(In Thousands of Dollars)
	Mortgage-backed securities	$	102,020	$	—		$	102,020	$	—
	Obligations of states, counties and political subdivisions		14,877		—			14,877		—
	U.S. treasury securities		3,846		—			3,846		—
	U.S. agencies		1,001		—			1,001		—
		Fair Value Measurements at December 31, 2012 Using
		Totals		Quoted			Significant		Significant
		At		Prices in			Other		Unobservable
		December 31,		Active			Observable		Inputs
		2012		Markets For			Inputs		(Level 3)
				Identical			(Level 2)
				Assets
				(Level 1)
		(In Thousands of Dollars)
	Mortgage-backed securities	$	77,553	$	—		$	77,553	$	—
	Obligations of states, counties and political subdivisions		14,981		—			14,981		—
	U.S. treasury securities		80		—			80		—
Balances of Impaired Loans and Foreclosed Assets Measured at Fair Value on Nonrecurring Basis	'
	The following table presents the balances of impaired loans and foreclosed assets measured at fair value on a non-recurring basis as of September 30, 2013 and December 31, 2012.
		Fair Value Measurements at September 30, 2013 Using
		Totals		Quoted			Significant		Significant
		At		Prices in			Other		Unobservable
		September 30,		Active			Observable		Inputs
		2013		Markets For			Inputs		(Level 3)
				Identical			(Level 2)
				Assets
				(Level 1)
		(In Thousands of Dollars)
	Impaired loans	$	9,849	$	—		$	—	$	9,849
	Foreclosed property and other real estate		4,734		—			—		4,734
		Fair Value Measurements at December 31, 2012 Using
		Totals		Quoted			Significant		Significant
		At		Prices in			Other		Unobservable
		December 31,		Active			Observable		Inputs
		2012		Markets For			Inputs		(Level 3)
				Identical			(Level 2)
				Assets
				(Level 1)
		(In Thousands of Dollars)
	Impaired loans	$	14,956	$	—		$	—	$	14,956
	Foreclosed property and other real estate		11,368		—			—		11,368
Summary of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	'
	Following the table is a description of the valuation technique and the sensitivity of the technique to changes in the significant unobservable input.
		Level 3 Significant Unobservable Input Assumptions
		Fair Value		Valuation Technique		Unobservable Input	Quantitative
		September 30,					Range
		2013					of Unobservable
							Inputs (Weighted-
							Average)
		(In
		Thousands of
		Dollars)
	Non-recurring fair value measurements:
	Impaired loans	$	9,849	Multiple data points, including discount to appraised value of collateral based on recent market activity		Appraisal compatibility adjustment (discount)	9% - 10%
							-9.50%
	Foreclosed property and other real estate	$	4,734	Discount to appraised value of property based on recent market activity for sales of similar properties		Appraisal compatibility adjustment (discount)	9% - 10%
							-9.50%
Schedule of Estimated Fair Value and Related Carrying or Notional Amounts of Company's Financial Instruments	'
	The estimated fair value and related carrying or notional amounts, as well as the level within the fair value hierarchy, of the Company’s financial instruments at September 30, 2013 and December 31, 2012 were as follows:
		September 30, 2013
		Carrying		Estimated			Level 1		Level 2		Level 3
		Amount		Fair Value
		(In Thousands of Dollars)
	Assets:
	Cash and cash equivalents	$	43,478	$	43,478		$	43,478	$	—	$	—
	Investment securities available-for-sale		121,744		121,744			—		121,744		—
	Investment securities held-to-maturity		35,108		33,508			—		33,508		—
	Federal funds sold		5,000		5,000			5,000		—		—
	Federal Home Loan Bank stock		906		906			—		906		—
	Loans, net of allowance for loan losses		304,778		305,032			—		—		305,032
	Liabilities:
	Deposits		476,020		476,534			—		476,534		—
	Short-term borrowings		1,777		1,777			—		1,777		—
	Long-term borrowings		5,000		5,009			—		5,009		—
		December 31, 2012
		Carrying		Estimated			Level 1		Level 2		Level 3
		Amount		Fair Value
		(In Thousands of Dollars)
	Assets:
	Cash and cash equivalents	$	54,126	$	54,126		$	54,126	$	—	$	—
	Investment securities available-for-sale		92,614		92,614			—		92,614		—
	Investment securities held-to-maturity		21,136		21,185			—		21,185		—
	Federal funds sold		5,000		5,000			5,000		—		—
	Federal Home Loan Bank stock		936		936			—		936		—
	Loans, net of allowance for loan losses		337,400		339,230			—		—		339,230
	Liabilities:
	Deposits		489,034		490,596			—		490,596		—
	Short-term borrowings		638		638			—		638		—

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investments Debt And Equity Securities [Abstract]	'
Investment Securities Available-for-Sale and Held-to-Maturity	'
	Details of investment securities available-for-sale and held-to-maturity at September 30, 2013 and December 31, 2012 are as follows:
		Available-for-Sale
		September 30, 2013
		Amortized		Gross			Gross			Estimated
				Unrealized			Unrealized			Fair
		Cost		Gains			Losses			Value
		(In Thousands of Dollars)
	Mortgage-backed securities	$	101,147	$	1,888		$	(1,015	)	$	102,020
	Obligations of states, counties and political subdivisions		14,160		742			(25	)		14,877
	U.S. treasury securities		4,164		—			(318	)		3,846
	Obligations of U.S. government sponsored agencies		1,000		1			—			1,001
	Total	$	120,471	$	2,631		$	(1,358	)	$	121,744
		Held-to-Maturity
		September 30, 2013
		Amortized		Gross			Gross			Estimated
				Unrealized			Unrealized			Fair
		Cost		Gains			Losses			Value
		(In Thousands of Dollars)
	U.S. agencies	$	35,108	$	—		$	(1,600	)	$	33,508
		Available-for-Sale
		December 31, 2012
				Gross			Gross			Estimated
		Amortized		Unrealized			Unrealized			Fair
		Cost		Gains			Losses			Value
		(In Thousands of Dollars)
	Mortgage-backed securities	$	74,117	$	3,468		$	(32	)	$	77,553
	Obligations of states, counties and political subdivisions		13,395		1,586			—			14,981
	U.S. treasury securities		80		—			—			80
	Total	$	87,592	$	5,054		$	(32	)	$	92,614
		Held-to-Maturity
		December 31, 2012
		Amortized		Gross			Gross			Estimated
				Unrealized			Unrealized			Fair
		Cost		Gains			Losses			Value
		(In Thousands of Dollars)
	U.S. agencies	$	21,136	$	56		$	(7	)	$	21,185
Scheduled Maturities of Investment Securities Available-for-Sale and Held-to-Maturity	'
	The scheduled maturities of investment securities available-for-sale and held-to-maturity at September 30, 2013 are presented in the following table:
		Available-for-Sale					Held-to-Maturity
		Amortized		Estimated			Amortized			Estimated
				Fair						Fair
		Cost		Value			Cost			Value
		(In Thousands of Dollars)
	Maturing within one year	$	281	$	284		$	—		$	—
	Maturing after one to five years		10,641		11,127			—			—
	Maturing after five to ten years		56,585		56,593			15,196			14,853
	Maturing after ten years		52,964		53,740			19,912			18,655
	Total	$	120,471	$	121,744		$	35,108		$	33,508
Investments' Gross Unrealized Losses and Fair Value	'
	At September 30, 2013 and December 31, 2012, based on the aforementioned considerations, management did not record an other-than-temporary impairment on any security that was in an unrealized loss position.
		Available-for-Sale
		September 30, 2013
		Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
	Mortgage-backed securities	$	50,328	$	(996	)	$	296		$	(19	)
	U.S. treasury securities		3,766		(318	)		—			—
	Obligations of states, counties and political subdivisions		1,944		(25	)		—			—
		$	56,038	$	(1,339	)	$	296		$	(19	)
		Held-to-Maturity
		September 30, 2013
		Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
	U.S. agencies	$	33,508	$	(1,600	)	$	—		$	—
		Available-for-Sale
		December 31, 2012
		Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
	U.S. treasury securities	$	80	$	—		$	—		$	—
	Mortgage-backed securities		1,173		(3	)		5,617			(29	)
		$	1,253	$	(3	)	$	5,617		$	(29	)
		Held-to-Maturity
		December 31, 2012
		Less than 12 Months					12 Months or More
				Unrealized						Unrealized
		Fair Value		Losses			Fair Value			Losses
		(In Thousands of Dollars)
	U.S. agencies	$	7,491	$	(7	)	$	—		$	—

Loans_and_Allowance_for_Loan_L1

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule of Loan Portfolio by Reporting Segment and Portfolio Segment	'
	At September 30, 2013 and December 31, 2012, the composition of the loan portfolio by reporting segment and portfolio segment was as follows:
		September 30, 2013
		FUSB		ALC			Total
		(In Thousands of Dollars)
	Real estate loans:
	Construction, land development and other land loans	$	13,650	$	—		$	13,650
	Secured by 1-4 family residential properties		35,532		27,807			63,339
	Secured by multi-family residential properties		22,085		—			22,085
	Secured by non-farm, non-residential properties		121,586		—			121,586
	Other		771		—			771
	Commercial and industrial loans		38,665		—			38,665
	Consumer loans		11,045		47,426			58,471
	Other loans		746		—			746
	Total loans	$	244,080	$	75,233		$	319,313
	Less: Unearned interest and fees		160		5,093			5,253
	Allowance for loan losses		6,349		2,933			9,282
	Net loans	$	237,571	$	67,207		$	304,778
		December 31, 2012
		FUSB		ALC			Total
		(In Thousands of Dollars)
	Real estate loans:
	Construction, land development and other land loans	$	30,635	$	—		$	30,635
	Secured by 1-4 family residential properties		38,450		33,047			71,497
	Secured by multi-family residential properties		24,187		—			24,187
	Secured by non-farm, non-residential properties		129,235		—			129,235
	Other		801		—			801
	Commercial and industrial loans		42,903		—			42,903
	Consumer loans		14,483		47,001			61,484
	Other loans		1,037		—			1,037
	Total loans	$	281,731	$	80,048		$	361,779
	Less: Unearned interest and fees		175		4,926			5,101
	Allowance for loan losses		15,765		3,513			19,278
	Net loans	$	265,791	$	71,609		$	337,400
Schedule of Changes in Allowance for Loan Losses and Recorded Investment in Loans	'
	The following tables present changes in the allowance for loan losses by reporting segment and loan type as of September 30, 2013 and December 31, 2012:
		FUSB
		September 30, 2013
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
	Allowance for loan losses:
	Beginning balance	$	977	$	14,216		$	168		$	338		$	66		$	—		$	15,765
	Charge-offs		462		7,950			248			493			2			—			9,155
	Recoveries		87		43			65			4			2			—			201
	Provision		168		(1,381	)		195			599			(43	)		—			(462	)
	Ending balance		770		4,928			180			448			23			—			6,349
	Ending balance individually evaluated for impairment		224		2,561			—			—			—			—			2,785
	Ending balance collectively evaluated for impairment	$	546	$	2,367		$	180		$	448		$	23		$	—		$	3,564
	Loan receivables:
	Ending balance		38,665		158,092			11,045			35,532			746			—			244,080
	Ending balance individually evaluated for impairment		788		34,532			—			295			—			—			35,615
	Ending balance collectively evaluated for impairment	$	37,877	$	123,560		$	11,045		$	35,237		$	746		$	—		$	208,465
		ALC
		September 30, 2013
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
	Allowance for loan losses:
	Beginning balance	$	—	$	—		$	2,733		$	780		$	—		$	—		$	3,513
	Charge-offs		—		—			2,129			407			—			—			2,536
	Recoveries		—		—			680			15			—			—			695
	Provision		—		—			1,075			186			—			—			1,261
	Ending balance		—		—			2,359			574			—			—			2,933
	Ending balance individually evaluated for impairment		—		—			—			—			—			—			—
	Ending balance collectively evaluated for impairment	$	—	$	—		$	2,359		$	574		$	—		$	—		$	2,933
	Loan receivables:
	Ending balance		—		—			47,426			27,807			—			—			75,233
	Ending balance individually evaluated for impairment		—		—			—			—			—			—			—
	Ending balance collectively evaluated for impairment	$	—	$	—		$	47,426		$	27,807		$	—		$	—		$	75,233
		FUSB & ALC
		September 30, 2013
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
	Allowance for loan losses:
	Beginning balance	$	977	$	14,216		$	2,901		$	1,118		$	66		$	—		$	19,278
	Charge-offs		462		7,950			2,377			900			2			—			11,691
	Recoveries		87		43			745			19			2			—			896
	Provision		168		(1,381	)		1,270			785			(43	)		—			799
	Ending balance		770		4,928			2,539			1,022			23			—			9,282
	Ending balance individually evaluated for impairment		224		2,561			—			—			—			—			2,785
	Ending balance collectively evaluated for impairment	$	546	$	2,367		$	2,539		$	1,022		$	23		$	—		$	6,497
	Loan receivables:
	Ending balance		38,665		158,092			58,471			63,339			746			—			319,313
	Ending balance individually evaluated for impairment		788		34,532			—			295			—			—			35,615
	Ending balance collectively evaluated for impairment	$	37,877	$	123,560		$	58,471		$	63,044		$	746		$	—		$	283,698
		FUSB
		December 31, 2012
		Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
				Real Estate						Real Estate
		(In Thousands of Dollars)
	Allowance for loan losses:
	Beginning balance	$	889	$	16,533		$	306		$	684		$	78		$	201		$	18,691
	Charge-offs		1,278		3,395			199			199			16			—			5,087
	Recoveries		156		606			79			24			2			—			867
	Provision		1,210		472			(18	)		(171	)		2			(201	)		1,294
	Ending balance		977		14,216			168			338			66			—			15,765
Ending balance individually evaluated for impairment		406		10,818			—			—			—			—			11,224
Ending balance collectively evaluated for impairment	$	571	$	3,398		$	168		$	338		$	66		$	—		$	4,541
Loan receivables:
Ending balance		42,903		184,858			14,483			38,450			1,037			—			281,731
Ending balance individually evaluated for impairment		1,085		52,893			—			325			—			—			54,303
Ending balance collectively evaluated for impairment	$	41,818	$	131,965		$	14,483		$	38,125		$	1,037		$	—		$	227,428
	ALC
	December 31, 2012
	Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
			Real Estate						Real Estate
	(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance	$	—	$	—		$	2,542		$	1,034		$	—		$	—		$	3,576
Charge-offs		—		—			3,249			713			—			—			3,962
Recoveries		—		—			815			40			—			—			855
Provision		—		—			2,625			419			—			—			3,044
Ending balance		—		—			2,733			780			—			—			3,513
Ending balance individually evaluated for impairment		—		—			—			—			—			—			—
Ending balance collectively evaluated for impairment	$	—	$	—		$	2,733		$	780		$	—		$	—		$	3,513
Loan receivables:
Ending balance		—		—			47,001			33,047			—			—			80,048
Ending balance individually evaluated for impairment		—		—			—			—			—			—			—
Ending balance collectively evaluated for impairment	$	—	$	—		$	47,001		$	33,047		$	—		$	—		$	80,048
	FUSB & ALC
	December 31, 2012
	Commercial		Commercial			Consumer			Residential			Other			Unallocated			Total
			Real Estate						Real Estate
	(In Thousands of Dollars)
Allowance for loan losses:
Beginning balance	$	889	$	16,533		$	2,848		$	1,718		$	78		$	201		$	22,267
Charge-offs		1,278		3,395			3,448			912			16			—			9,049
Recoveries		156		606			894			64			2			—			1,722
Provision		1,210		472			2,607			248			2			(201	)		4,338
Ending balance		977		14,216			2,901			1,118			66			—			19,278
Ending balance individually evaluated for impairment		406		10,818			—			—			—			—			11,224
Ending balance collectively evaluated for impairment	$	571	$	3,398		$	2,901		$	1,118		$	66		$	—		$	8,054
																—
Loan receivables:
Ending balance		42,903		184,858			61,484			71,497			1,037			—			361,779
Ending balance individually evaluated for impairment		1,085		52,893			—			325			—			—			54,303
Ending balance collectively evaluated for impairment	$	41,818	$	131,965		$	61,484		$	71,172		$	1,037		$	—		$	307,476
Schedule of Carrying Amount of Loans by Credit Quality Indicator	'
	The table below illustrates the carrying amount of loans by credit quality indicator at September 30, 2013:
		FUSB
		Pass		Special			Substandard			Doubtful			Total
		4-Jan		Mention			6			7
				5
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	4,299	$	947		$	8,404		$	—		$	13,650
	Secured by 1-4 family residential properties		29,666		1,841			4,025			—			35,532
	Secured by multi-family residential properties		14,532		—			7,553			—			22,085
	Secured by non-farm, non-residential properties		97,425		7,178			16,983			—			121,586
	Other		771		—			—			—			771
	Commercial and industrial loans		31,729		1,269			5,667			—			38,665
	Consumer loans		10,173		123			749			—			11,045
	Other loans		742		—			4			—			746
	Total	$	189,337	$	11,358		$	43,385		$	—		$	244,080
		ALC
		Performing		Nonperforming			Total
		(In Thousands of Dollars)
	Loans secured by real estate:
	Secured by 1-4 family residential properties	$	27,085	$	722		$	27,807
	Consumer loans		46,088		1,338			47,426
	Total	$	73,173	$	2,060		$	75,233
	The table below illustrates the carrying amount of loans by credit quality indicator at December 31, 2012:
		FUSB
		Pass		Special			Substandard			Doubtful			Total
		4-Jan		Mention			6			7
				5
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	12,653	$	1,235		$	16,747		$	—		$	30,635
	Secured by 1-4 family residential properties		31,772		1,546			5,132			—			38,450
	Secured by multi-family residential properties		10,776		3,132			10,279			—			24,187
	Secured by non-farm, non-residential properties		90,139		8,630			30,466			—			129,235
	Other		801		—			—			—			801
	Commercial and industrial loans		40,607		419			1,877			—			42,903
	Consumer loans		13,394		188			901			—			14,483
	Other loans		1,036		—			1			—			1,037
	Total	$	201,178	$	15,150		$	65,403		$	—		$	281,731
		ALC
		Performing		Nonperforming			Total
		(In Thousands of Dollars)
	Loans secured by real estate:
	Secured by 1-4 family residential properties	$	32,036	$	1,011		$	33,047
	Consumer loans		46,175		826			47,001
	Total	$	78,211	$	1,837		$	80,048
Schedule of Aging Analysis of Past Due Loans	'
	The following table provides an aging analysis of past due loans by class at September 30, 2013:
		FUSB
		As of September 30, 2013
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	233	$	—		$	3,132		$	3,365		$	10,285		$	13,650		$	—
	Secured by 1-4 family residential properties		438		236			1,062			1,736			33,796			35,532			—
	Secured by multi-family residential Properties		—		—			1,286			1,286			20,799			22,085			—
	Secured by non-farm, non-residential properties		693		105			3,579			4,377			117,209			121,586			—
	Other		—		—			—			—			771			771			—
	Commercial and industrial loans		68		83			55			206			38,459			38,665			—
	Consumer loans		128		19			25			172			10,873			11,045			—
	Other loans		—		—			—			—			746			746			—
	Total	$	1,560	$	443		$	9,139		$	11,142		$	232,938		$	244,080		$	—
		ALC
		As of September 30, 2013
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	—	$	—		$	—		$	—		$	—		$	—		$	—
	Secured by 1-4 family residential properties		286		92			763			1,141			26,666			27,807			665
	Secured by multi-family residential properties		—		—			—			—			—			—			—
	Secured by non-farm, non-residential properties		—		—			—			—			—			—			—
	Other		—		—			—			—			—			—			—
	Commercial and industrial loans		—		—			—			—			—			—			—
	Consumer loans		745		543			1,200			2,488			44,938			47,426			1,188
	Other loans		—		—			—			—			—			—			—
	Total	$	1,031	$	635		$	1,963		$	3,629		$	71,604		$	75,233		$	1,853
	The following table provides an aging analysis of past due loans by class at December 31, 2012:
		FUSB
		As of December 31, 2012
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	456	$	1,126		$	10,329		$	11,911		$	18,724		$	30,635		$	—
	Secured by 1-4 family residential properties		1,027		572			1,106			2,705			35,745			38,450			—
	Secured by multi-family residential properties		—		—			2,884			2,884			21,303			24,187			—
	Secured by non-farm, non-residential properties		210		32			4,930			5,172			124,063			129,235			—
	Other		—		—			—			—			801			801			—
	Commercial and industrial loans		430		59			480			969			41,934			42,903			—
	Consumer loans		407		89			66			562			13,921			14,483			—
	Other loans		—		—			—			—			1,037			1,037			—
	Total	$	2,530	$	1,878		$	19,795		$	24,203		$	257,528		$	281,731		$	—
		ALC
		As of December 31, 2012
		30-59 Days		60-89 Days			Greater			Total Past			Current			Total			Recorded
		Past Due		Past Due			Than			Due						Loans			Investment >
							90 Days												90 Days and
																			Accruing
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	—	$	—		$	—		$	—		$	—		$	—		$	—
	Secured by 1-4 family residential properties		348		173			1,075			1,596			31,451			33,047			851
Secured by multi-family residential properties		—		—			—			—			—			—			—
Secured by non-farm, non-residential properties		—		—			—			—			—			—			—
Other		—		—			—			—			—			—			—
Commercial and industrial loans		—		—			—			—			—			—			—
Consumer loans		989		609			1,159			2,757			44,244			47,001			720
Other loans		—		—			—			—			—			—			—
Total	$	1,337	$	782		$	2,234		$	4,353		$	75,695		$	80,048		$	1,571
Schedule of Analysis of Non-Accruing Loans	'
	The following table provides an analysis of non-accruing loans by class at September 30, 2013 and December 31, 2012:
		Loans on Non-Accrual Status
		September 30, 2013		December 31, 2012
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	4,330	$	11,456
	Secured by 1-4 family residential properties		1,978		2,441
	Secured by multi-family residential properties		1,286		2,884
	Secured by non-farm, non-residential properties		4,594		5,809
	Commercial and industrial loans		425		822
	Consumer loans		137		206
	Total loans	$	12,750	$	23,618
Schedule of Carrying Amount of Impaired Loans	'
	At September 30, 2013, the carrying amount of impaired loans consisted of the following:
		September 30, 2013
		Carrying		Unpaid			Related
		Amount		Principal			Allowances
				Balance
		(In Thousands of Dollars)
	Impaired loans with no related allowance recorded
	Loans secured by real estate:
	Construction, land development and other land loans	$	6,570	$	6,570		$	—
	Secured by 1-4 family residential properties		295		295			—
	Secured by multi-family residential properties		1,054		1,054			—
	Secured by non-farm, non-residential properties		14,498		14,498			—
	Commercial and industrial		564		564			—
	Total loans with no related allowance recorded	$	22,981	$	22,981		$	—
	Impaired loans with an allowance recorded
	Loans secured by real estate:
	Construction, land development and other land loans	$	1,461	$	1,461		$	263
	Secured by multi-family residential properties		6,499		6,499			1,699
	Secured by non-farm, non-residential properties		4,450		4,450			599
	Commercial and industrial		224		224			224
	Total loans with an allowance recorded	$	12,634	$	12,634		$	2,785
	Total impaired loans
	Loans secured by real estate:
	Construction, land development and other land loans	$	8,031	$	8,031		$	263
	Secured by 1-4 family residential properties		295		295			—
	Secured by multi-family residential properties		7,553		7,553			1,699
	Secured by non-farm, non-residential properties		18,948		18,948			599
	Commercial and industrial		788		788			224
	Total impaired loans	$	35,615	$	35,615		$	2,785
	At December 31, 2012, the carrying amount of impaired loans consisted of the following:
		December 31, 2012
		Carrying		Unpaid			Related
		Amount		Principal			Allowances
				Balance
		(In Thousands of Dollars)
	Impaired loans with no related allowance recorded
	Loans secured by real estate:
	Construction, land development and other land loans	$	2,645	$	2,645		$	—
	Secured by 1-4 family residential properties		325		325			—
	Secured by multi-family residential properties		3,027		3,027			—
	Secured by non-farm, non-residential properties		21,471		21,471			—
	Commercial and industrial		655		655			—
	Total loans with no related allowance recorded	$	28,123	$	28,123		$	—
	Impaired loans with an allowance recorded
	Loans secured by real estate:
	Construction, land development and other land loans	$	12,658	$	12,658		$	7,453
	Secured by multi-family residential properties		7,252		7,252			1,865
	Secured by non-farm, non-residential properties		5,840		5,840			1,500
	Commercial and industrial		430		430			406
	Total loans with an allowance recorded	$	26,180	$	26,180		$	11,224
	Total impaired loans
	Loans secured by real estate:
	Construction, land development and other land loans	$	15,303	$	15,303		$	7,453
	Secured by 1-4 family residential properties		325		325			—
	Secured by multi-family residential properties		10,279		10,279			1,865
	Secured by non-farm, non-residential properties		27,311		27,311			1,500
	Commercial and industrial		1,085		1,085			406
	Total impaired loans	$	54,303	$	54,303		$	11,224
Schedule of Average Net Investment Impaired Loans and Interest Income Recognized and Received on Impaired Loans	'
	The average net investment in impaired loans and interest income recognized and received on impaired loans at September 30, 2013 and December 31, 2012 were as follows:
		September 30, 2013
		Average		Interest			Interest
		Recorded		Income			Income
		Investment		Recognized			Received
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	11,656	$	134		$	135
	Secured by 1-4 family residential properties		308		5			6
	Secured by multi-family residential properties		9,075		298			304
	Secured by non-farm, non-residential properties		23,527		741			726
	Commercial and industrial		1,061		28			28
	Total impaired loans	$	45,627	$	1,206		$	1,199
		December 31, 2012
		Average		Interest			Interest
		Recorded		Income			Income
		Investment		Recognized			Received
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	18,283	$	546		$	598
	Secured by 1-4 family residential properties		146		10			10
	Secured by multi-family residential properties		4,942		483			455
	Secured by non-farm, non-residential properties		29,627		1,452			1,477
	Commercial and industrial		1,222		38			42
	Total impaired loans	$	54,220	$	2,529		$	2,582
Schedule of Number of Loans Modified Troubled Debt Restructuring by Loan Portfolio	'
	The following table provides the number of loans modified in a troubled debt restructuring by loan portfolio as of September 30, 2013 and December 31, 2012, as well as the pre- and post-modification principal balance as of September 30, 2013 and December 31, 2012:
		September 30, 2013								December 31, 2012
		Number		Pre-			Post-			Number			Pre-			Post-
		of Loans		Modification			Modification			of Loans			Modification			Modification
				Outstanding			Principal						Outstanding			Principal
				Principal			Balance						Principal			Balance
				Balance									Balance
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans		8	$	12,580		$	5,279			10		$	11,267		$	9,988
	Secured by 1-4 family residential properties		13		870			591			4			596			586
	Secured by non-farm, non-residential properties		8		1,892			1,633			6			1,811			1,586
	Commercial loans		3		371			331			4			380			356
	Total		32	$	15,713		$	7,834			24		$	14,054		$	12,516
	The following table provides the number of loans modified in a troubled debt restructuring that have subsequently defaulted, by loan portfolio, as of September 30, 2013 and December 31, 2012:
		September 30, 2013					December 31, 2012
		Number		Recorded			Number			Recorded
		of Loans		Investment			of Loans			Investment
		(In Thousands of Dollars)
	Troubled debt restructurings that have subsequently defaulted:
	Construction, land development and other land loans		2	$	2,083			6		$	7,062
	Secured by non-farm, non-residential properties		4		1,073			2			433
	Commercial loans		—		—			2			68
	Total		6	$	3,156			10		$	7,563
Schedule of Change in Troubled Debt Restructuring	'
	The change in troubled debt restructuring from December 31, 2012 to September 30, 2013 was as follows:
		September 30,		December 31,			Change
		2013		2012
		(In Thousands of Dollars)
	Loans secured by real estate:
	Construction, land development and other land loans	$	5,279	$	9,988		$	(4,709	)
	Secured by 1-4 family residential properties		591		586			5
	Secured by non-farm, non-residential properties		1,633		1,586			47
	Commercial and industrial loans		331		356			(25	)
	Total	$	7,834	$	12,516			(4,682	)

Other_Real_Estate_Owned_Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2013
Banking And Thrift [Abstract]	'
Summary of Foreclosed Property Activity	'
	The following table summarizes foreclosed property activity for the nine months ended September 30, 2013 and 2012.
		Nine Months Ended September 30, 2013
		FUSB			ALC			TOTAL
		(Dollars in Thousands)
	Balance December 31, 2012	$	11,089		$	2,197		$	13,286
	Transfers from loans		1,770			426			2,196
	Sales proceeds		(1,876	)		(905	)		(2,781	)
	Gross gains		62			28			90
	Gross losses		(155	)		(687	)		(842	)
	Net losses		(93	)		(659	)		(752	)
	Impairment		(368	)		(209	)		(577	)
	Balance September 30, 2013	$	10,522		$	850		$	11,372
		Nine Months Ended September 30, 2012
		FUSB			ALC			TOTAL
		(Dollars in Thousands)
	Balance December 31, 2011	$	12,606		$	4,168		$	16,774
	Transfers from loans		5,337			682			6,019
	Sales proceeds		(3,670	)		(1,242	)		(4,912	)
	Gross gains		11			63			74
	Gross losses		(528	)		(578	)		(1,106	)
	Net losses		(517	)		(515	)		(1,032	)
	Impairment		(2,735	)		(506	)		(3,241	)
	Balance September 30, 2012	$	11,021		$	2,587		$	13,608

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Effective Income Tax Rate	'
	The consolidated tax expense (benefit) differed from the amount computed by applying the federal statutory income tax rate of 34.0%, as described in the following table:
		Nine Months Ended
		September 30,			September 30,
		2013			2012
		(Dollars in Thousands)
	Income tax expense at federal statutory rate	$	1,421		$	499
	Increase (decrease) resulting from:
	Tax-exempt interest		(292	)		(274	)
	State income tax expense, net of federal income taxes		163			43
	Other		(86	)		(111	)
	Total	$	1,206		$	157

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Summary of Results for Reportable Segments	'
	All intercompany transactions have been eliminated to determine the consolidated balances. The results for the two reportable segments of the Company are included in the following table:
		FUSB			ALC		All Other		Eliminations			Consolidated
		(Dollars in Thousands)
	For the three months ended September 30, 2013:
	Net interest income	$	4,190		$	3,376	$	2	$	—		$	7,568
	Provision for loan losses		(300	)		540		—		—			240
	Total non-interest income		913			360		1,267		(1,249	)		1,291
	Total non-interest expense		4,962			2,322		308		(227	)		7,365
	Income before income taxes		441			874		961		(1,022	)		1,254
	Provision for income taxes		12			337		1		—			350
	Net income	$	429		$	537	$	960	$	(1,022	)	$	904
	Other significant items:
	Total assets	$	561,325		$	70,809	$	75,422	$	(147,554	)	$	560,002
	Total investment securities		156,772			—		80		—			156,852
	Total loans, net		292,180			67,207		—		(54,609	)		304,778
	Investment in subsidiaries		784			—		70,386		(71,165	)		5
	Fixed asset additions		(6	)		8		—		—			2
	Depreciation expense		131			49		—		—			180
	Total interest income from external customers		4,096			4,174		—		—			8,270
	Total interest income from affiliates		798			—		3		(801	)		—
	For the nine months ended September 30, 2013:
	Net interest income	$	12,706		$	10,355	$	7	$	—		$	23,068
	Provision for loan losses		(462	)		1,261		—		—			799
	Total non-interest income		3,239			1,045		3,778		(3,920	)		4,142
	Total non-interest expense		14,247			7,984		668		(666	)		22,233
	Income before income taxes		2,160			2,155		3,117		(3,254	)		4,178
	Provision for income taxes		371			833		2		—			1,206
	Net income	$	1,789		$	1,322	$	3,115	$	(3,254	)	$	2,972
	Other significant items:
	Fixed asset additions	$	56		$	26	$	—	$	—		$	82
	Depreciation expense		392			128		—		—			520
	Total interest income from external customers		12,494			12,802		—		—			25,296
	Total interest income from affiliates		2,447			—		7		(2,454	)		—
	For the three months ended September 30, 2012:
	Net interest income	$	4,617		$	3,675	$	5	$	—		$	8,297
	Provision for loan losses		—			492		—		—			492
	Total non-interest income		1,017			361		1,610		(1,535	)		1,453
	Total non-interest expense		4,803			2,562		394		(197	)		7,562
	Income before income taxes		831			982		1,221		(1,338	)		1,696
	Provision for income taxes		136			379		2		—			517
	Net income	$	695		$	603	$	1,219	$	(1,338	)	$	1,179
	Other significant items:
	Total assets	$	584,884		$	79,629	$	74,280	$	(154,471	)	$	584,322
	Total investment securities		114,688			—		75		—			114,763
	Total loans, net		335,487			73,565		—		(64,319	)		344,733
	Investment in subsidiaries		802			—		69,080		(69,877	)		5
	Fixed asset additions		99			32		—		—			131
	Depreciation expense		127			38		—		—			165
	Total interest income from external customers		4,701			4,627		—		—			9,328
	Total interest income from affiliates		952			—		5		(957	)		—
	For the nine months ended September 30, 2012:
	Net interest income	$	14,548		$	10,856	$	14	$	—		$	25,418
	Provision for loan losses		1,523			1,652		—		—			3,175
	Total non-interest income		2,987			1,020		2,254		(2,203	)		4,058
	Total non-interest expense		16,506			8,124		763		(561	)		24,832
	Income before income taxes		(494	)		2,100		1,505		(1,642	)		1,469
	Provision for (benefit from) income taxes		(660	)		812		5		—			157
	Net income	$	166		$	1,288	$	1,500	$	(1,642	)	$	1,312
	Other significant items:
	Fixed asset additions	$	211		$	209	$	—	$	—		$	420
	Depreciation expense		408			116		—		—			524
	Total interest income from external customers		15,296			13,790		—		—			29,086
	Total interest income from affiliates		2,935			—		13		(2,948	)		—

Guarantees_Commitments_and_Con1

Guarantees, Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Summary of Commitments and Contingent Liabilities	'
	A summary of these commitments and contingent liabilities is presented below:
		September 30,		December 31,
		2013		2012
		(Dollars in Thousands)
	Standby Letters of Credit	$	946	$	1,092
	Commitments to Extend Credit	$	31,363	$	32,123

Net_Income_Per_Share_Additiona

Net Income Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Outstanding potentially dilutive instruments	0	0	0	0

Net_Income_Per_Share_Basic_and

Net Income Per Share - Basic and Diluted Net Income Per Share Calculations (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Net income	$904	$1,179	$2,972	$1,312
Weighted Average Shares Outstanding	6,027,562	6,023,124	6,024,935	6,022,648
BASIC AND DILUTED NET INCOME PER SHARE	$0.15	$0.20	$0.49	$0.22

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Balances of Available-for-Sale Securities Measured at Fair Value on Recurring Basis (Detail) (Available-for-sale Securities [Member], Recurring Fair Value Measurements [Member], USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	$102,020	$77,553
U.S. Treasury Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	3,846	80
Obligations of States, Counties and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	14,877	14,981
U.S. Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	1,001	'
Level 1 [Member] | Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 1 [Member] | U.S. Treasury Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 1 [Member] | Obligations of States, Counties and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 1 [Member] | U.S. Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 2 [Member] | Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	102,020	77,553
Level 2 [Member] | U.S. Treasury Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	3,846	80
Level 2 [Member] | Obligations of States, Counties and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	14,877	14,981
Level 2 [Member] | U.S. Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	1,001	'
Level 3 [Member] | Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | U.S. Treasury Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | Obligations of States, Counties and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | U.S. Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Fair Value Measurement [Line Items]	'	'	'	'	'
Assets transferred into or out of Levels 1-2	$0	'	$0	'	$0
Liabilities transferred into or out of Levels 1-2	0	'	0	'	0
Charge-offs of the allowance for possible loan losses	'	'	515,399	'	407,043
Impairment on Other Real Estate	215,000	377,000	577,000	3,241,000	3,582,596
Level 3 [Member]	'	'	'	'	'
Fair Value Measurement [Line Items]	'	'	'	'	'
Loans, net of specific allowances, subject to nonrecurring measurement valuation	9,848,600	'	9,848,600	'	14,956,079
Foreclosed assets measured at fair value upon initial recognition	'	'	2,093,755	'	2,097,440
Foreclosed assets, total	$2,640,103	'	$2,640,103	'	$9,270,443
Impaired Loans [Member]	'	'	'	'	'
Fair Value Measurement [Line Items]	'	'	'	'	'
Discounted rate for estimated cost in current affairs	'	'	9.00%	'	'
Minimum [Member]	'	'	'	'	'
Fair Value Measurement [Line Items]	'	'	'	'	'
Duration for appraisal	'	'	'18 months	'	'
Percentage of fair value input discount rate as per old appraisal	'	'	20.00%	'	'
Maximum [Member]	'	'	'	'	'
Fair Value Measurement [Line Items]	'	'	'	'	'
Duration for appraisal	'	'	'24 months	'	'
Percentage of fair value input discount rate as per old appraisal	'	'	30.00%	'	'

Fair_Value_of_Financial_Instru4

Fair Value of Financial Instruments - Balances of Impaired Loans and Foreclosed Assets Measured at Fair Value on Nonrecurring Basis (Detail) (Non-Recurring Fair Value Measurements [Member], USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Impaired Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	$9,849	$14,956
Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	4,734	11,368
Level 1 [Member] | Impaired Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 1 [Member] | Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 2 [Member] | Impaired Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 2 [Member] | Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	'	'
Level 3 [Member] | Impaired Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	9,849	14,956
Level 3 [Member] | Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Financial assets measured at fair value	$4,734	$11,368

Fair_Value_of_Financial_Instru5

Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) (Detail) (Non-Recurring Fair Value Measurements [Member], USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Impaired Loans [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	$9,849	$14,956
Valuation Technique	'Multiple data points, including discount to appraised value of collateral based on recent market activity	'
Quantitative Range of Unobservable Inputs (Weighted-Average)	-9.50%	'
Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Fair Value	$4,734	$11,368
Valuation Technique	'Discount to appraised value of property based on recent market activity for sales of similar properties	'
Quantitative Range of Unobservable Inputs (Weighted-Average)	-9.50%	'
Minimum [Member] | Impaired Loans [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Quantitative Range of Unobservable Inputs (Weighted-Average)	9.00%	'
Minimum [Member] | Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Quantitative Range of Unobservable Inputs (Weighted-Average)	9.00%	'
Maximum [Member] | Impaired Loans [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Quantitative Range of Unobservable Inputs (Weighted-Average)	10.00%	'
Maximum [Member] | Foreclosed Property and Other Real Estate [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Quantitative Range of Unobservable Inputs (Weighted-Average)	10.00%	'

Fair_Value_of_Financial_Instru6

Fair Value of Financial Instruments - Schedule of Estimated Fair Value and Related Carrying or Notional Amounts of Company's Financial Instruments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets:	'	'
Investment securities available-for-sale	$121,744	$92,614
Investment securities held-to-maturity	33,508	'
Federal Funds Sold	5,000	5,000
Carrying Amount [Member]	'	'
Assets:	'	'
Cash and cash equivalents	43,478	54,126
Investment securities available-for-sale	121,744	92,614
Investment securities held-to-maturity	35,108	21,136
Federal Funds Sold	5,000	5,000
Federal Home Loan Bank stock	906	936
Loans, net of allowance for loan losses	304,778	337,400
Liabilities:	'	'
Deposits	476,020	489,034
Short-term borrowings	1,777	638
Long-term borrowings	5,000	'
Estimated Fair Value [Member]	'	'
Assets:	'	'
Cash and cash equivalents	43,478	54,126
Investment securities available-for-sale	121,744	92,614
Investment securities held-to-maturity	33,508	21,185
Federal Funds Sold	5,000	5,000
Federal Home Loan Bank stock	906	936
Loans, net of allowance for loan losses	305,032	339,230
Liabilities:	'	'
Deposits	476,534	490,596
Short-term borrowings	1,777	638
Long-term borrowings	5,009	'
Level 1 [Member]	'	'
Assets:	'	'
Cash and cash equivalents	43,478	54,126
Investment securities available-for-sale	'	'
Investment securities held-to-maturity	'	'
Federal Funds Sold	5,000	5,000
Federal Home Loan Bank stock	'	'
Loans, net of allowance for loan losses	'	'
Liabilities:	'	'
Deposits	'	'
Short-term borrowings	'	'
Long-term borrowings	'	'
Level 2 [Member]	'	'
Assets:	'	'
Cash and cash equivalents	'	'
Investment securities available-for-sale	121,744	92,614
Investment securities held-to-maturity	33,508	21,185
Federal Funds Sold	'	'
Federal Home Loan Bank stock	906	936
Loans, net of allowance for loan losses	'	'
Liabilities:	'	'
Deposits	476,534	490,596
Short-term borrowings	1,777	638
Long-term borrowings	5,009	'
Level 3 [Member]	'	'
Assets:	'	'
Cash and cash equivalents	'	'
Investment securities available-for-sale	'	'
Investment securities held-to-maturity	'	'
Federal Funds Sold	'	'
Federal Home Loan Bank stock	'	'
Loans, net of allowance for loan losses	305,032	339,230
Liabilities:	'	'
Deposits	'	'
Short-term borrowings	'	'
Long-term borrowings	'	'

Investment_Securities_Investme

Investment Securities - Investment Securities Available-for-Sale and Held-to-Maturity (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Held-to-Maturity, Amortized Cost	$35,108	$21,136
Held-to-Maturity, Estimated Fair Value	33,508	'
Available-for-Sale, Amortized Cost	120,471	87,592
Available-for-Sale, Gross Unrealized Gains	2,631	5,054
Available-for-Sale, Gross Unrealized Losses	-1,358	-32
Available-for-Sale, Estimated Fair Value	121,744	92,614
Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	101,147	74,117
Available-for-Sale, Gross Unrealized Gains	1,888	3,468
Available-for-Sale, Gross Unrealized Losses	-1,015	-32
Available-for-Sale, Estimated Fair Value	102,020	77,553
Obligations of States, Counties and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	14,160	13,395
Available-for-Sale, Gross Unrealized Gains	742	1,586
Available-for-Sale, Gross Unrealized Losses	-25	'
Available-for-Sale, Estimated Fair Value	14,877	14,981
U.S. Treasury Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	4,164	80
Available-for-Sale, Gross Unrealized Gains	'	'
Available-for-Sale, Gross Unrealized Losses	-318	'
Available-for-Sale, Estimated Fair Value	3,846	80
Obligations of U.S. Government Sponsored Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	1,000	'
Available-for-Sale, Gross Unrealized Gains	1	'
Available-for-Sale, Gross Unrealized Losses	'	'
Available-for-Sale, Estimated Fair Value	1,001	'
U.S. Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Held-to-Maturity, Amortized Cost	35,108	21,136
Held-to-Maturity, Gross Unrealized Gains	'	56
Held-to-Maturity, Gross Unrealized Losses	-1,600	-7
Held-to-Maturity, Estimated Fair Value	$33,508	$21,185

Investment_Securities_Schedule

Investment Securities - Scheduled Maturities of Investment Securities Available-for-Sale and Held-to-Maturity (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investments Debt And Equity Securities [Abstract]	'	'
Available-for Sale, Maturing within one year, Amortized Cost	$281	'
Available-for Sale, Maturing after one to five years, Amortized Cost	10,641	'
Available-for Sale, Maturing after five to ten years, Amortized Cost	56,585	'
Available-for Sale, Maturing after ten years, Amortized Cost	52,964	'
Available-for Sale, Amortized Cost, Total	120,471	'
Available-for Sale, Maturing within one year, Estimated Fair Value	284	'
Available-for Sale, Maturing after one to five years, Estimated Fair Value	11,127	'
Available-for Sale, Maturing after five to ten years, Estimated Fair Value	56,593	'
Available-for Sale, Maturing after ten years, Estimated Fair Value	53,740	'
Available-for Sale, Estimated Fair Value, Total	121,744	'
Held-to-maturity, Maturing within one year, Amortized Cost	'	'
Held-to-maturity, Maturing after one to five years, Amortized Cost	'	'
Held-to-maturity, Maturing after five to ten years, Amortized Cost	15,196	'
Held-to-maturity, Maturing after ten years, Amortized Cost	19,912	'
Held-to-Maturity, Amortized Cost, Total	35,108	21,136
Held-to-maturity, Maturing within one year, Estimated Fair Value	'	'
Held-to-maturity, Maturing after one to five years, Estimated Fair Value	'	'
Held-to-maturity, Maturing after five to ten years, Estimated Fair Value	14,853	'
Held-to-maturity, Maturing after ten years, Estimated Fair Value	18,655	'
Held-to-Maturity, Estimated Fair Value	$33,508	'

Investment_Securities_Investme1

Investment Securities - Investments' Gross Unrealized Losses and Fair Value (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Available For Sale And Held To Maturity Securities In Continuous Unrealized Loss Position [Line Items]	'	'
Available-for-Sale, Less than 12 Months, Fair Value	$56,038	$1,253
Available-for-Sale, Less than 12 Months, Unrealized Losses	-1,339	-3
Available-for-Sale, 12 Months or More, Fair Value	296	5,617
Available-for-Sale, 12 Months or More, Unrealized Losses	-19	-29
U.S. Agencies [Member]	'	'
Available For Sale And Held To Maturity Securities In Continuous Unrealized Loss Position [Line Items]	'	'
Held-to-Maturity, Less than 12 Months, Fair Value	33,508	7,491
Held-to-Maturity, Less than 12 Months, Unrealized Losses	-1,600	-7
Held-to-Maturity, 12 Months or More, Fair Value	'	'
Held-to-Maturity, 12 Months or More, Unrealized Losses	'	'
Mortgage-Backed Securities [Member]	'	'
Available For Sale And Held To Maturity Securities In Continuous Unrealized Loss Position [Line Items]	'	'
Available-for-Sale, Less than 12 Months, Fair Value	50,328	1,173
Available-for-Sale, Less than 12 Months, Unrealized Losses	-996	-3
Available-for-Sale, 12 Months or More, Fair Value	296	5,617
Available-for-Sale, 12 Months or More, Unrealized Losses	-19	-29
U.S. Treasury Securities [Member]	'	'
Available For Sale And Held To Maturity Securities In Continuous Unrealized Loss Position [Line Items]	'	'
Available-for-Sale, Less than 12 Months, Fair Value	3,766	80
Available-for-Sale, Less than 12 Months, Unrealized Losses	-318	'
Available-for-Sale, 12 Months or More, Fair Value	'	'
Available-for-Sale, 12 Months or More, Unrealized Losses	'	'
Obligations of States, Counties and Political Subdivisions [Member]	'	'
Available For Sale And Held To Maturity Securities In Continuous Unrealized Loss Position [Line Items]	'	'
Available-for-Sale, Less than 12 Months, Fair Value	1,944	'
Available-for-Sale, Less than 12 Months, Unrealized Losses	-25	'
Available-for-Sale, 12 Months or More, Fair Value	'	'
Available-for-Sale, 12 Months or More, Unrealized Losses	'	'

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
	Security
Investments Debt And Equity Securities [Abstract]	'	'
Number of debt securities continues loss position for more than twelve months	2	'
Number of debt securities continues loss position for less than twelve months	43	'
Investment securities available-for-sale carrying amount	$69,700,000	$61,600,000
Net gains and losses realized on securities available-for-sale	$0	$0

Investments_in_Limited_Partner1

Investments in Limited Partnerships - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Equity Method Investments And Joint Ventures [Abstract]	'
Consolidated VIE limited partnership interest	99.90%
Net increase to total assets due to consolidation	$53,388
Maximum exposure to future loss related to limited partnerships recorded investment	818,999
Remaining cash commitments	$0

Loans_and_Allowance_for_Loan_L2

Loans and Allowance for Loan Losses - Schedule of Loan Portfolio by Reporting Segment and Portfolio Segment (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	$319,313	$361,779	'
Less: Unearned Interest and fees	5,253	5,101	'
Allowance for loan losses	9,282	19,278	'
Net loans	304,778	337,400	'
FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	244,080	281,731	'
Less: Unearned Interest and fees	160	175	'
Allowance for loan losses	6,349	15,765	18,691
Net loans	237,571	265,791	'
ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	75,233	80,048	'
Less: Unearned Interest and fees	5,093	4,926	'
Allowance for loan losses	2,933	3,513	3,576
Net loans	67,207	71,609	'
Construction, Land Development and Other Land Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	13,650	30,635	'
Construction, Land Development and Other Land Loans [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	13,650	30,635	'
Construction, Land Development and Other Land Loans [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	'	'	'
Secured by 1-4 Family Residential Properties [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	63,339	71,497	'
Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	35,532	38,450	'
Secured by 1-4 Family Residential Properties [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	27,807	33,047	'
Secured by Multi-family Residential Properties [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	22,085	24,187	'
Secured by Multi-family Residential Properties [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	22,085	24,187	'
Secured by Multi-family Residential Properties [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	'	'	'
Secured by Non-farm, Non-residential Properties [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	121,586	129,235	'
Secured by Non-farm, Non-residential Properties [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	121,586	129,235	'
Secured by Non-farm, Non-residential Properties [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	'	'	'
Other [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	771	801	'
Other [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	771	801	'
Other [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	'	'	'
Commercial and Industrial Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	38,665	42,903	'
Commercial and Industrial Loans [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	38,665	42,903	'
Commercial and Industrial Loans [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	'	'	'
Consumer Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	58,471	61,484	'
Consumer Loans [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	11,045	14,483	'
Consumer Loans [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	47,426	47,001	'
Other Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	746	1,037	'
Other Loans [Member] | FUSB [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	746	1,037	'
Allowance for loan losses	23	66	78
Other Loans [Member] | ALC [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total loans	'	'	'
Allowance for loan losses	'	'	'

Loans_and_Allowance_for_Loan_L3

Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
	Segment
Noncancelable Obligations Future Minimum Payments Due [Line Items]	'	'
Number of portfolio segments	8	'
Related party loans and commitments	$3,689,631	$2,468,563
New loans to parties	'	310,265
Repayments of loan	53,446	747,536
Accrued interest on loans, discontinued amount	12,750,648	23,618,330
Accrued interest on loans	333,637	1,058,377
Interest income actually recorded	30,880	157,601
Accruing loans past due 90 days or more amounted	1,853,276	1,570,548
Trouble Debt restructuring Modified period term	'6 months	'
Period of repayment performance under the modified loan terms	'6 months	'
Non-accruing loans restructured and remained on nonaccrual status	6,116,647	12,397,049
Troubled debt restructuring evaluated impairment	500,000	'
Allowance for loans losses	$486,349	$6,322,593
Real Estate [Member]	'	'
Noncancelable Obligations Future Minimum Payments Due [Line Items]	'	'
Percentage of loan portfolio	0.69%	70.90%

Loans_and_Allowance_for_Loan_L4

Loans and Allowance for Loan Losses - Schedule of Changes in Allowance for Loan Losses and Recorded Investment in Loans (Detail) (USD $)	3 Months Ended		9 Months Ended					9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2012
						Other Loans [Member]	Other Loans [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]	FUSB & ALC [Member]
										Commercial Loans [Member]	Commercial Loans [Member]	Commercial Real Estate [Member]	Commercial Real Estate [Member]	Consumer [Member]	Consumer [Member]	Residential Real Estate [Member]	Residential Real Estate [Member]	Other Loans [Member]	Other Loans [Member]	Unallocated [Member]	Unallocated [Member]			Commercial Loans [Member]	Commercial Loans [Member]	Commercial Real Estate [Member]	Commercial Real Estate [Member]	Consumer [Member]	Consumer [Member]	Residential Real Estate [Member]	Residential Real Estate [Member]	Other Loans [Member]	Other Loans [Member]	Unallocated [Member]	Unallocated [Member]			Commercial Loans [Member]	Commercial Loans [Member]	Commercial Real Estate [Member]	Commercial Real Estate [Member]	Consumer [Member]	Consumer [Member]	Residential Real Estate [Member]	Residential Real Estate [Member]	Other Loans [Member]	Other Loans [Member]	Unallocated [Member]
Allowance for loan losses:	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	$19,278	'	'	'	'	$15,765	$18,691	$977	$889	$14,216	$16,533	$168	$306	$338	$684	$66	$78	'	$201	$3,513	$3,576	'	'	'	'	$2,733	$2,542	$780	$1,034	'	'	'	'	$19,278	$22,267	$977	$889	$14,216	$16,533	$2,901	$2,848	$1,118	$1,718	$66	$78	$201
Charge-offs	'	'	'	'	'	'	'	9,155	5,087	462	1,278	7,950	3,395	248	199	493	199	2	16	'	'	2,536	3,962	'	'	'	'	2,129	3,249	407	713	'	'	'	'	11,691	9,049	462	1,278	7,950	3,395	2,377	3,448	900	912	2	16	'
Recoveries	'	'	'	'	'	'	'	201	867	87	156	43	606	65	79	4	24	2	2	'	'	695	855	'	'	'	'	680	815	15	40	'	'	'	'	896	1,722	87	156	43	606	745	894	19	64	2	2	'
Provision	240	492	799	3,175	'	'	'	-462	1,294	168	1,210	-1,381	472	195	-18	599	-171	-43	2	'	-201	1,261	3,044	'	'	'	'	1,075	2,625	186	419	'	'	'	'	799	4,338	168	1,210	-1,381	472	1,270	2,607	785	248	-43	2	-201
Ending balance	9,282	'	9,282	'	'	'	'	6,349	15,765	770	977	4,928	14,216	180	168	448	338	23	66	'	'	2,933	3,513	'	'	'	'	2,359	2,733	574	780	'	'	'	'	9,282	19,278	770	977	4,928	14,216	2,539	2,901	1,022	1,118	23	66	'
Beginning balance	'	'	19,278	'	'	'	'	15,765	18,691	977	889	14,216	16,533	168	306	338	684	66	78	'	201	3,513	3,576	'	'	'	'	2,733	2,542	780	1,034	'	'	'	'	19,278	22,267	977	889	14,216	16,533	2,901	2,848	1,118	1,718	66	78	201
Charge-offs	'	'	'	'	'	'	'	9,155	5,087	462	1,278	7,950	3,395	248	199	493	199	2	16	'	'	2,536	3,962	'	'	'	'	2,129	3,249	407	713	'	'	'	'	11,691	9,049	462	1,278	7,950	3,395	2,377	3,448	900	912	2	16	'
Recoveries	'	'	'	'	'	'	'	201	867	87	156	43	606	65	79	4	24	2	2	'	'	695	855	'	'	'	'	680	815	15	40	'	'	'	'	896	1,722	87	156	43	606	745	894	19	64	2	2	'
Provision	240	492	799	3,175	'	'	'	-462	1,294	168	1,210	-1,381	472	195	-18	599	-171	-43	2	'	-201	1,261	3,044	'	'	'	'	1,075	2,625	186	419	'	'	'	'	799	4,338	168	1,210	-1,381	472	1,270	2,607	785	248	-43	2	-201
Ending balance	9,282	'	9,282	'	'	'	'	6,349	15,765	770	977	4,928	14,216	180	168	448	338	23	66	'	'	2,933	3,513	'	'	'	'	2,359	2,733	574	780	'	'	'	'	9,282	19,278	770	977	4,928	14,216	2,539	2,901	1,022	1,118	23	66	'
Ending balance individually evaluated for impairment	'	'	'	'	'	'	'	2,785	11,224	224	406	2,561	10,818	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	2,785	11,224	224	406	2,561	10,818	'	'	'	'	'	'	'
Ending balance collectively evaluated for impairment	'	'	'	'	'	'	'	3,564	4,541	546	571	2,367	3,398	180	168	448	338	23	66	'	'	2,933	3,513	'	'	'	'	2,359	2,733	574	780	'	'	'	'	6,497	8,054	546	571	2,367	3,398	2,539	2,901	1,022	1,118	23	66	'
Loan receivables:	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Ending balance	319,313	'	319,313	'	361,779	746	1,037	244,080	281,731	38,665	42,903	158,092	184,858	11,045	14,483	35,532	38,450	746	1,037	'	'	75,233	80,048	'	'	'	'	47,426	47,001	27,807	33,047	'	'	'	'	319,313	361,779	38,665	42,903	158,092	184,858	58,471	61,484	63,339	71,497	746	1,037	'
Ending balance individually evaluated for impairment	'	'	'	'	'	'	'	35,615	54,303	788	1,085	34,532	52,893	'	'	295	325	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	35,615	54,303	788	1,085	34,532	52,893	'	'	295	325	'	'	'
Ending balance collectively evaluated for impairment	'	'	'	'	'	'	'	$208,465	$227,428	$37,877	$41,818	$123,560	$131,965	$11,045	$14,483	$35,237	$38,125	$746	$1,037	'	'	$75,233	$80,048	'	'	'	'	$47,426	$47,001	$27,807	$33,047	'	'	'	'	$283,698	$307,476	$37,877	$41,818	$123,560	$131,965	$58,471	$61,484	$63,044	$71,172	$746	$1,037	'

Loans_and_Allowance_for_Loan_L5

Loans and Allowance for Loan Losses - Schedule of Carrying Amount of Loans by Credit Quality Indicator (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	$319,313	$361,779
Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	63,339	71,497
Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	58,471	61,484
Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	13,650	30,635
Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	22,085	24,187
Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	121,586	129,235
Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	771	801
Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	38,665	42,903
Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	746	1,037
ALC [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	75,233	80,048
ALC [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	27,807	33,047
ALC [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	47,426	47,001
ALC [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
ALC [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
ALC [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
ALC [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
ALC [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
ALC [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
FUSB [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	244,080	281,731
FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	35,532	38,450
FUSB [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	11,045	14,483
FUSB [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	13,650	30,635
FUSB [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	22,085	24,187
FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	121,586	129,235
FUSB [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	771	801
FUSB [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	38,665	42,903
FUSB [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	746	1,037
Performing [Member] | ALC [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	73,173	78,211
Performing [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	27,085	32,036
Performing [Member] | ALC [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	46,088	46,175
Nonperforming [Member] | ALC [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	2,060	1,837
Nonperforming [Member] | ALC [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	722	1,011
Nonperforming [Member] | ALC [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	1,338	826
Pass 1-4 [Member] | FUSB [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	189,337	201,178
Pass 1-4 [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	29,666	31,772
Pass 1-4 [Member] | FUSB [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	10,173	13,394
Pass 1-4 [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	4,299	12,653
Pass 1-4 [Member] | FUSB [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	14,532	10,776
Pass 1-4 [Member] | FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	97,425	90,139
Pass 1-4 [Member] | FUSB [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	771	801
Pass 1-4 [Member] | FUSB [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	31,729	40,607
Pass 1-4 [Member] | FUSB [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	742	1,036
Special Mention 5 [Member] | FUSB [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	11,358	15,150
Special Mention 5 [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	1,841	1,546
Special Mention 5 [Member] | FUSB [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	123	188
Special Mention 5 [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	947	1,235
Special Mention 5 [Member] | FUSB [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	3,132
Special Mention 5 [Member] | FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	7,178	8,630
Special Mention 5 [Member] | FUSB [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Special Mention 5 [Member] | FUSB [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	1,269	419
Special Mention 5 [Member] | FUSB [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Substandard 6 [Member] | FUSB [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	43,385	65,403
Substandard 6 [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	4,025	5,132
Substandard 6 [Member] | FUSB [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	749	901
Substandard 6 [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	8,404	16,747
Substandard 6 [Member] | FUSB [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	7,553	10,279
Substandard 6 [Member] | FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	16,983	30,466
Substandard 6 [Member] | FUSB [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Substandard 6 [Member] | FUSB [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	5,667	1,877
Substandard 6 [Member] | FUSB [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	4	1
Doubtful 7 [Member] | FUSB [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'
Doubtful 7 [Member] | FUSB [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Ending balance	'	'

Loans_and_Allowance_for_Loan_L6

Loans and Allowance for Loan Losses - Schedule of Aging Analysis of Past Due Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	$319,313,000	$361,779,000
Accruing loans past due 90 days or more amounted	1,853,276	1,570,548
Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	13,650,000	30,635,000
Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	63,339,000	71,497,000
Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	22,085,000	24,187,000
Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	121,586,000	129,235,000
Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	771,000	801,000
Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	38,665,000	42,903,000
Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	58,471,000	61,484,000
Other Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	746,000	1,037,000
ALC [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	1,031,000	1,337,000
60-89 Days Past Due	635,000	782,000
Greater than 90 Days	1,963,000	2,234,000
Total Past Due	3,629,000	4,353,000
Current	71,604,000	75,695,000
Total loans	75,233,000	80,048,000
Accruing loans past due 90 days or more amounted	1,853,000	1,571,000
ALC [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	'	'
Total loans	'	'
Accruing loans past due 90 days or more amounted	'	'
ALC [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	286,000	348,000
60-89 Days Past Due	92,000	173,000
Greater than 90 Days	763,000	1,075,000
Total Past Due	1,141,000	1,596,000
Current	26,666,000	31,451,000
Total loans	27,807,000	33,047,000
Accruing loans past due 90 days or more amounted	665,000	851,000
ALC [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	'	'
Total loans	'	'
Accruing loans past due 90 days or more amounted	'	'
ALC [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	'	'
Total loans	'	'
Accruing loans past due 90 days or more amounted	'	'
ALC [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	'	'
Total loans	'	'
Accruing loans past due 90 days or more amounted	'	'
ALC [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	'	'
Total loans	'	'
Accruing loans past due 90 days or more amounted	'	'
ALC [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	745,000	989,000
60-89 Days Past Due	543,000	609,000
Greater than 90 Days	1,200,000	1,159,000
Total Past Due	2,488,000	2,757,000
Current	44,938,000	44,244,000
Total loans	47,426,000	47,001,000
Accruing loans past due 90 days or more amounted	1,188,000	720,000
ALC [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	'	'
Total loans	'	'
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	1,560,000	2,530,000
60-89 Days Past Due	443,000	1,878,000
Greater than 90 Days	9,139,000	19,795,000
Total Past Due	11,142,000	24,203,000
Current	232,938,000	257,528,000
Total loans	244,080,000	281,731,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	233,000	456,000
60-89 Days Past Due	'	1,126,000
Greater than 90 Days	3,132,000	10,329,000
Total Past Due	3,365,000	11,911,000
Current	10,285,000	18,724,000
Total loans	13,650,000	30,635,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	438,000	1,027,000
60-89 Days Past Due	236,000	572,000
Greater than 90 Days	1,062,000	1,106,000
Total Past Due	1,736,000	2,705,000
Current	33,796,000	35,745,000
Total loans	35,532,000	38,450,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	1,286,000	2,884,000
Total Past Due	1,286,000	2,884,000
Current	20,799,000	21,303,000
Total loans	22,085,000	24,187,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	693,000	210,000
60-89 Days Past Due	105,000	32,000
Greater than 90 Days	3,579,000	4,930,000
Total Past Due	4,377,000	5,172,000
Current	117,209,000	124,063,000
Total loans	121,586,000	129,235,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	771,000	801,000
Total loans	771,000	801,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	68,000	430,000
60-89 Days Past Due	83,000	59,000
Greater than 90 Days	55,000	480,000
Total Past Due	206,000	969,000
Current	38,459,000	41,934,000
Total loans	38,665,000	42,903,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	128,000	407,000
60-89 Days Past Due	19,000	89,000
Greater than 90 Days	25,000	66,000
Total Past Due	172,000	562,000
Current	10,873,000	13,921,000
Total loans	11,045,000	14,483,000
Accruing loans past due 90 days or more amounted	'	'
FUSB [Member] | Other Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	'
60-89 Days Past Due	'	'
Greater than 90 Days	'	'
Total Past Due	'	'
Current	746,000	1,037,000
Total loans	746,000	1,037,000
Accruing loans past due 90 days or more amounted	'	'

Loans_and_Allowance_for_Loan_L7

Loans and Allowance for Loan Losses - Schedule of Analysis of Non-Accruing Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	$12,750	$23,618
Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	4,330	11,456
Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	1,978	2,441
Secured by Multi-family Residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	1,286	2,884
Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	4,594	5,809
Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	425	822
Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total loans	$137	$206

Loans_and_Allowance_for_Loan_L8

Loans and Allowance for Loan Losses - Schedule of Carrying Amount of Impaired Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	$319,313	$361,779
Construction, Land Development and Other Land Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	13,650	30,635
Secured by 1-4 Family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	63,339	71,497
Secured by Multi-family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	22,085	24,187
Secured by Non-farm, Non-residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	121,586	129,235
Commercial and Industrial Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	38,665	42,903
Impaired Loans with no Related Allowance Recorded [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	22,981	28,123
Unpaid Principal Balance	22,981	28,123
Related Allowances	'	'
Impaired Loans with no Related Allowance Recorded [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	6,570	2,645
Unpaid Principal Balance	6,570	2,645
Related Allowances	'	'
Impaired Loans with no Related Allowance Recorded [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	295	325
Unpaid Principal Balance	295	325
Related Allowances	'	'
Impaired Loans with no Related Allowance Recorded [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	1,054	3,027
Unpaid Principal Balance	1,054	3,027
Related Allowances	'	'
Impaired Loans with no Related Allowance Recorded [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	14,498	21,471
Unpaid Principal Balance	14,498	21,471
Related Allowances	'	'
Impaired Loans with no Related Allowance Recorded [Member] | Commercial and Industrial Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	564	655
Unpaid Principal Balance	564	655
Related Allowances	'	'
Impaired Loans with an Allowance Recorded [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	12,634	26,180
Unpaid Principal Balance	12,634	26,180
Related Allowances	2,785	11,224
Impaired Loans with an Allowance Recorded [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	1,461	12,658
Unpaid Principal Balance	1,461	12,658
Related Allowances	263	7,453
Impaired Loans with an Allowance Recorded [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	6,499	7,252
Unpaid Principal Balance	6,499	7,252
Related Allowances	1,699	1,865
Impaired Loans with an Allowance Recorded [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	4,450	5,840
Unpaid Principal Balance	4,450	5,840
Related Allowances	599	1,500
Impaired Loans with an Allowance Recorded [Member] | Commercial and Industrial Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	224	430
Unpaid Principal Balance	224	430
Related Allowances	224	406
Impaired Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	35,615	54,303
Unpaid Principal Balance	35,615	54,303
Related Allowances	2,785	11,224
Impaired Loans [Member] | Construction, Land Development and Other Land Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	8,031	15,303
Unpaid Principal Balance	8,031	15,303
Related Allowances	263	7,453
Impaired Loans [Member] | Secured by 1-4 Family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	295	325
Unpaid Principal Balance	295	325
Related Allowances	'	'
Impaired Loans [Member] | Secured by Multi-family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	7,553	10,279
Unpaid Principal Balance	7,553	10,279
Related Allowances	1,699	1,865
Impaired Loans [Member] | Secured by Non-farm, Non-residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	18,948	27,311
Unpaid Principal Balance	18,948	27,311
Related Allowances	599	1,500
Impaired Loans [Member] | Commercial and Industrial Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Carrying Amount	788	1,085
Unpaid Principal Balance	788	1,085
Related Allowances	$224	$406

Loans_and_Allowance_for_Loan_L9

Loans and Allowance for Loan Losses - Schedule of Average Net Investment Impaired Loans and Interest Income Recognized and Received on Impaired Loans (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule Of Financial Receivables [Line Items]	'	'
Average Recorded Investment	$45,627	$54,220
Interest Income Recognized	1,206	2,529
Interest Income Received	1,199	2,582
Construction, Land Development and Other Land Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Average Recorded Investment	11,656	18,283
Interest Income Recognized	134	546
Interest Income Received	135	598
Secured by 1-4 Family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Average Recorded Investment	308	146
Interest Income Recognized	5	10
Interest Income Received	6	10
Secured by Multi-family Residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Average Recorded Investment	9,075	4,942
Interest Income Recognized	298	483
Interest Income Received	304	455
Secured by Non-farm, Non-residential Properties [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Average Recorded Investment	23,527	29,627
Interest Income Recognized	741	1,452
Interest Income Received	726	1,477
Commercial and Industrial Loans [Member]	'	'
Schedule Of Financial Receivables [Line Items]	'	'
Average Recorded Investment	1,061	1,222
Interest Income Recognized	28	38
Interest Income Received	$28	$42

Recovered_Sheet1

Loans and Allowance for Loan Losses - Schedule of Number of Loans Modified Troubled Debt Restructuring by Loan Portfolio (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
	SecurityLoan	SecurityLoan
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	32	24
Pre-Modification Outstanding Principal Balance	$15,713	$14,054
Post-Modification Principal Balance	7,834	12,516
Subsequent default number of loans	6	10
Recorded Investment	3,156	7,563
Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	8	10
Pre-Modification Outstanding Principal Balance	12,580	11,267
Post-Modification Principal Balance	5,279	9,988
Subsequent default number of loans	2	6
Recorded Investment	2,083	7,062
Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	13	4
Pre-Modification Outstanding Principal Balance	870	596
Post-Modification Principal Balance	591	586
Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	8	6
Pre-Modification Outstanding Principal Balance	1,892	1,811
Post-Modification Principal Balance	1,633	1,586
Subsequent default number of loans	4	2
Recorded Investment	1,073	433
Commercial loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Loans	3	4
Pre-Modification Outstanding Principal Balance	371	380
Post-Modification Principal Balance	331	356
Commercial Loans [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Subsequent default number of loans	'	2
Recorded Investment	'	$68

Recovered_Sheet2

Loans and Allowance for Loan Losses - Schedule of Change in Troubled Debt Restructuring (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Post-Modification Principal Balance	$7,834	$12,516
Change	-4,682	'
Construction, Land Development and Other Land Loans [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Post-Modification Principal Balance	5,279	9,988
Change	-4,709	'
Secured by 1-4 Family Residential Properties [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Post-Modification Principal Balance	591	586
Change	5	'
Secured by Non-farm, Non-residential Properties [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Post-Modification Principal Balance	1,633	1,586
Change	47	'
Commercial loans [Member]	'	'
Financing Receivable Modifications Number Of Contracts [Line Items]	'	'
Post-Modification Principal Balance	331	356
Change	($25)	'

Other_Real_Estate_Owned_Summar

Other Real Estate Owned - Summary of Foreclosed Property Activity (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	'	'	$13,286,000	$16,774,000	$16,774,000
Transfers from loans	'	'	2,196,000	6,019,000	'
Sales proceeds	'	'	-2,781,000	-4,912,000	'
Gross gains	'	'	90,000	74,000	'
Gross losses	'	'	-842,000	-1,106,000	'
Net losses	'	'	-752,000	-1,032,000	'
Impairment	-215,000	-377,000	-577,000	-3,241,000	-3,582,596
Ending balance	11,372,000	13,608,000	11,372,000	13,608,000	13,286,000
FUSB [Member]	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	'	'	11,089,000	12,606,000	12,606,000
Transfers from loans	'	'	1,770,000	5,337,000	'
Sales proceeds	'	'	-1,876,000	-3,670,000	'
Gross gains	'	'	62,000	11,000	'
Gross losses	'	'	-155,000	-528,000	'
Net losses	'	'	-93,000	-517,000	'
Impairment	'	'	-368,000	-2,735,000	'
Ending balance	10,522,000	11,021,000	10,522,000	11,021,000	'
ALC [Member]	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'
Beginning balance	'	'	2,197,000	4,168,000	4,168,000
Transfers from loans	'	'	426,000	682,000	'
Sales proceeds	'	'	-905,000	-1,242,000	'
Gross gains	'	'	28,000	63,000	'
Gross losses	'	'	-687,000	-578,000	'
Net losses	'	'	-659,000	-515,000	'
Impairment	'	'	-209,000	-506,000	'
Ending balance	$850,000	$2,587,000	$850,000	$2,587,000	'

Other_Real_Estate_Owned_Additi

Other Real Estate Owned - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
Real Estate [Abstract]	'
Maximum period for recording the adjustments to loan losses	'60 days

ShortTerm_Borrowings_Additiona

Short-Term Borrowings - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013
			Minimum [Member]	Maximum [Member]
Short-term Debt [Line Items]	'	'	'	'
Maturity period of federal funds	'	'	'1 day	'4 days
Federal funds purchased	$0	$0	'	'
Securities sold under repurchase agreements	1,777,000	638,000	'	'
Available fund lines from correspondent banks	$17,800,000	'	'	'

LongTerm_Borrowings_Additional

Long-Term Borrowings - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Debt Disclosure [Abstract]	'	'
Advances outstanding to secure borrowings	$5	$0
Assets pledged	5.3	0
Available credit from the FHLB	$163	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'
Unrecognized tax benefits	$0	'
Accrued interest and penalties	0	'
Federal statutory income tax rate	34.00%	'
Cumulative loss position period	'3 years	'
Net deferred tax assets	7,100,000	9,500,000
Provision for loan losses	3,500,000	7,300,000
Impairment of OREO	1,800,000	2,300,000
Deferred compensation	$1,600,000	$1,500,000
Projected future taxable income period	'5 years	'

Income_Taxes_Schedule_of_Effec

Income Taxes - Schedule of Effective Income Tax Rate (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax expense at federal statutory rate	'	'	$1,421	$499
Increase (decrease) resulting from:	'	'	'	'
Tax-exempt interest	'	'	-292	-274
State income tax expense, net of federal income taxes	'	'	163	43
Other	'	'	-86	-111
Total	$350	$517	$1,206	$157

Segment_Reporting_Additional_I

Segment Reporting - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	Segment
Segment Reporting [Abstract]	'
Number of reportable operating segments	2

Segment_Reporting_Summary_of_R

Segment Reporting - Summary of Results for Reportable Segments (Detail) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			12 Months Ended	3 Months Ended		9 Months Ended			12 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
						Eliminations [Member]	Eliminations [Member]	Eliminations [Member]	Eliminations [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	FUSB [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	ALC [Member]	All Other [Member]	All Other [Member]	All Other [Member]	All Other [Member]
												Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]			Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]	Operating Segments [Member]
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Net interest income	$7,568	$8,297	$23,068	$25,418	'	'	'	'	'	'	'	$4,190	$4,617	$12,706	$14,548	'	'	$3,376	$3,675	$10,355	$10,856	$2	$5	$7	$14
Provision for loan losses	240	492	799	3,175	'	'	'	'	'	-462	1,294	-300	'	-462	1,523	1,261	3,044	540	492	1,261	1,652	'	'	'	'
Total non-interest income	1,291	1,453	4,142	4,058	'	-1,249	-1,535	-3,920	-2,203	'	'	913	1,017	3,239	2,987	'	'	360	361	1,045	1,020	1,267	1,610	3,778	2,254
Total non-interest expense	7,365	7,562	22,233	24,832	'	-227	-197	-666	-561	'	'	4,962	4,803	14,247	16,506	'	'	2,322	2,562	7,984	8,124	308	394	668	763
Income before income taxes	1,254	1,696	4,178	1,469	'	-1,022	-1,338	-3,254	-1,642	'	'	441	831	2,160	-494	'	'	874	982	2,155	2,100	961	1,221	3,117	1,505
Provision for (benefit from) income taxes	350	517	1,206	157	'	'	'	'	'	'	'	12	136	371	-660	'	'	337	379	833	812	1	2	2	5
Net income	904	1,179	2,972	1,312	'	-1,022	-1,338	-3,254	-1,642	'	'	429	695	1,789	166	'	'	537	603	1,322	1,288	960	1,219	3,115	1,500
Other significant items:	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Total assets	560,002	584,322	560,002	584,322	567,133	-147,554	-154,471	-147,554	-154,471	'	'	561,325	584,884	561,325	584,884	'	'	70,809	79,629	70,809	79,629	75,422	74,280	75,422	74,280
Total investment securities	156,852	114,763	156,852	114,763	'	'	'	'	'	'	'	156,772	114,688	156,772	114,688	'	'	'	'	'	'	80	75	80	75
Total loans, net	304,778	344,733	304,778	344,733	'	-54,609	-64,319	-54,609	-64,319	'	'	292,180	335,487	292,180	335,487	'	'	67,207	73,565	67,207	73,565	'	'	'	'
Investment in subsidiaries	5	5	5	5	'	-71,165	-69,877	-71,165	-69,877	'	'	784	802	784	802	'	'	'	'	'	'	70,386	69,080	70,386	69,080
Fixed asset additions	2	131	82	420	'	'	'	'	'	'	'	-6	99	56	211	'	'	8	32	26	209	'	'	'	'
Depreciation expense	180	165	520	524	'	'	'	'	'	'	'	131	127	392	408	'	'	49	38	128	116	'	'	'	'
Total interest income from external customers	8,270	9,328	25,296	29,086	'	'	'	'	'	'	'	4,096	4,701	12,494	15,296	'	'	4,174	4,627	12,802	13,790	'	'	'	'
Total interest income from affiliates	'	'	'	'	'	($801)	($957)	($2,454)	($2,948)	'	'	$798	$952	$2,447	$2,935	'	'	'	'	'	'	$3	$5	$7	$13

Guarantees_Commitments_and_Con2

Guarantees, Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012
					Standby Letters of Credit [Member]	Standby Letters of Credit [Member]
Long-term Purchase Commitment [Line Items]	'	'	'	'	'	'
Credit losses associated with derivative contracts	$0	$0	'	'	'	'
Bank's total credit risk	'	'	'	'	946,000	1,092,000
Outstanding commitments to purchase and sell securities	'	'	'	'	$0	$0
Conversion claim and again ordered graves automotive to re-plead its fraud claims period	'	'	'60 days	'	'	'
Number of days within which documents need to be produced	'	'	'30 days	'	'	'

Guarantees_Commitments_and_Con3

Guarantees, Commitments and Contingencies - Summary of Commitments and Contingent Liabilities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Summary Of Commitments And Contingent Liabilities [Line Items]	'	'
Commitments and contingent liabilities	'	'
Standby Letters of Credit [Member]	'	'
Summary Of Commitments And Contingent Liabilities [Line Items]	'	'
Commitments and contingent liabilities	946,000	1,092,000
Commitments to Extend Credit [Member]	'	'
Summary Of Commitments And Contingent Liabilities [Line Items]	'	'
Commitments and contingent liabilities	$31,363,000	$32,123,000