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Long-Term Borrowings and Subordinated Debt - Schedule of Junior Subordinated Debt Securities and Interest Expense (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Junior Subordinated Debentures [Line Items] |  |  |
Balance | $ 45,619 | $ 45,619 | $ 45,619
Interest Expense | 1,327 | 1,222 | 2,070
2006 Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Balance | 25,000 | 25,000 | 25,000
Interest Expense | 554 | 463 | 475
2008 Junior Subordinated Debt-Trust Preferred Securities |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Balance | 20,619 | 20,619 | 20,619
Interest Expense | 773 | 759 | 770
2008 Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Balance | 0 | 0 | 0
Interest Expense | 0 | 0 | 422
2008 Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Balance | 0 | 0 | 0
Interest Expense | $ 0 | $ 0 | $ 403

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- Definition Junior Subordinated Debentures [Line Items] + References No definition available. + Details
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- Definition Interest expense incurred during the reporting period on junior subordinated debentures. Includes amortization of expenses incurred in the issuance of subordinated notes and debentures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.8) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments, excluding current portion. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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