The balance of financing receivables that were acquired with deteriorated credit quality.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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The valuation allowance for financing receivables acquired with deteriorated credit quality.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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-Number Topic 6

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-Subsection 1

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Allowance for Loan Losses - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Total ending allowance balance	$ 16,501	$ 15,992	$ 18,270	$ 18,882
Total ending loans balance	11,055	7,448	10,627
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment	1,589	1,312
Allowance For Loan Losses, Collectively evaluated for impairment	14,418	14,291
Allowance For Loan Losses, Loans acquired with deteriorated credit quality	494	389
Total ending allowance balance	16,501	15,992
Commercial [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment	1,589	1,312
Allowance For Loan Losses, Collectively evaluated for impairment	5,827	4,963
Allowance For Loan Losses, Loans acquired with deteriorated credit quality	494	389
Total ending allowance balance	7,910	6,664
Real Estate [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Collectively evaluated for impairment	2,508	3,462
Total ending allowance balance	2,508	3,462
Consumer [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Collectively evaluated for impairment	4,951	4,228
Total ending allowance balance	4,951	4,228
Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment	11,055	7,448
Loans: Collectively evaluated for impairment	1,370,740	1,054,157
Loans acquired with deteriorated credit quality	591	10,409
Total ending loans balance	1,382,386	1,072,014
Loans [Member] \| Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment	11,055	7,448
Loans: Collectively evaluated for impairment	664,251	489,547
Loans acquired with deteriorated credit quality	591	9,355
Total ending loans balance	675,897	506,350
Loans [Member] \| Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Collectively evaluated for impairment	255,383	186,526
Loans acquired with deteriorated credit quality		24
Total ending loans balance	255,383	186,550
Loans [Member] \| Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Collectively evaluated for impairment	321,470	279,448
Loans acquired with deteriorated credit quality		1,030
Total ending loans balance	321,470	280,478
Mortgage Warehousing [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Collectively evaluated for impairment	1,132	1,638
Total ending allowance balance	1,132	1,638
Mortgage Warehousing [Member] \| Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Collectively evaluated for impairment	129,636	98,636
Total ending loans balance	$ 129,636	$ 98,636