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Loans Modified as Troubled Debt Restructurings by Loan Class Segregated by Accrual Status (Detail) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Total TDRs		$ 14,862	$ 15,088
Commercial Loans | Single-family Non-owner Occupied
Financing Receivable, Impaired [Line Items]
Total TDRs		956	1,088
Commercial Loans | Non-farm, Non-residential
Financing Receivable, Impaired [Line Items]
Total TDRs		4,632	4,826
Consumer Real Estate | Home Equity Lines
Financing Receivable, Impaired [Line Items]
Total TDRs		44	47
Consumer Real Estate | Single Family Owner Occupied
Financing Receivable, Impaired [Line Items]
Total TDRs		8,634	8,883
Consumer Real Estate | Owner Occupied Construction
Financing Receivable, Impaired [Line Items]
Total TDRs		596	244
Nonaccrual
Financing Receivable, Impaired [Line Items]
Total TDRs	[1]	823	554
Nonaccrual | Commercial Loans | Single-family Non-owner Occupied
Financing Receivable, Impaired [Line Items]
Total TDRs	[1]	132
Nonaccrual | Commercial Loans | Non-farm, Non-residential
Financing Receivable, Impaired [Line Items]
Total TDRs	[1]		83
Nonaccrual | Consumer Real Estate | Single Family Owner Occupied
Financing Receivable, Impaired [Line Items]
Total TDRs	[1]	338	471
Nonaccrual | Consumer Real Estate | Owner Occupied Construction
Financing Receivable, Impaired [Line Items]
Total TDRs	[1]	353
Accrual
Financing Receivable, Impaired [Line Items]
Total TDRs		14,039	14,534
Accrual | Commercial Loans | Single-family Non-owner Occupied
Financing Receivable, Impaired [Line Items]
Total TDRs		824	1,088
Accrual | Commercial Loans | Non-farm, Non-residential
Financing Receivable, Impaired [Line Items]
Total TDRs		4,632	4,743
Accrual | Consumer Real Estate | Home Equity Lines
Financing Receivable, Impaired [Line Items]
Total TDRs		44	47
Accrual | Consumer Real Estate | Single Family Owner Occupied
Financing Receivable, Impaired [Line Items]
Total TDRs		8,296	8,412
Accrual | Consumer Real Estate | Owner Occupied Construction
Financing Receivable, Impaired [Line Items]
Total TDRs		$ 243	$ 244
[1] TDRs on nonaccrual status are included in the total nonaccrual loan balance disclosed in the table above.

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- Definition

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+ References

No definition available.

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



-SubTopic 40



-Section 50



-Paragraph 4



-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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