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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

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- Definition

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

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

-Publisher FASB

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-Topic 310

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- Definition

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

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

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-Name Accounting Standards Codification

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

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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

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-Topic 942

-SubTopic 210

-Section S99

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-Subparagraph (SX 210.9-03.7(d))

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-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	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Total ending allowance balance	$ 16,160	$ 15,660	$ 15,992	$ 18,880	$ 19,565	$ 18,270
Total ending loans balance	8,497			7,919
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment	1,175		1,312
Allowance For Loan Losses, Collectively evaluated for impairment	14,491		14,291
Allowance For Loan Losses, Loans acquired with deteriorated credit quality	494		389
Total ending allowance balance	16,160		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	1,175		1,312
Allowance For Loan Losses, Collectively evaluated for impairment	5,846		4,963
Allowance For Loan Losses, Loans acquired with deteriorated credit quality	494		389
Total ending allowance balance	7,515		6,664
Real Estate [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment
Allowance For Loan Losses, Collectively evaluated for impairment	3,304		3,462
Allowance For Loan Losses, Loans acquired with deteriorated credit quality
Total ending allowance balance	3,304		3,462
Consumer [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment
Allowance For Loan Losses, Collectively evaluated for impairment	4,041		4,228
Allowance For Loan Losses, Loans acquired with deteriorated credit quality
Total ending allowance balance	4,041		4,228
Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment	8,497		7,448
Loans: Collectively evaluated for impairment	1,338,061		1,054,157
Loans acquired with deteriorated credit quality	591		10,409
Total ending loans balance	1,347,149		1,072,014
Loans [Member] \| Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment	8,497		7,448
Loans: Collectively evaluated for impairment	669,867		489,547
Loans acquired with deteriorated credit quality	591		9,355
Total ending loans balance	678,955		506,350
Loans [Member] \| Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment
Loans: Collectively evaluated for impairment	252,807		186,526
Loans acquired with deteriorated credit quality			24
Total ending loans balance	252,807		186,550
Loans [Member] \| Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment
Loans: Collectively evaluated for impairment	309,774		279,448
Loans acquired with deteriorated credit quality			1,030
Total ending loans balance	309,774		280,478
Mortgage Warehousing [Member] \| Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment
Allowance For Loan Losses, Collectively evaluated for impairment	1,300		1,638
Allowance For Loan Losses, Loans acquired with deteriorated credit quality
Total ending allowance balance	1,300		1,638
Mortgage Warehousing [Member] \| Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment
Loans: Collectively evaluated for impairment	105,613		98,636
Loans acquired with deteriorated credit quality
Total ending loans balance	$ 105,613		$ 98,636