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Long-Term Borrowings and Subordinated Debt - Junior Subordinated Debt Securities and Interest Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Junior Subordinated Debentures [Line Items] |  |  |
Balance | $ 45,619 | $ 45,619 | $ 45,619
Interest Expense | 1,663 | 1,434 | 1,327
2006 Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Balance | 25,000 | 25,000 | 25,000
Interest Expense | 708 | 580 | 554
2008 Junior subordinated debt—trust preferred securities |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Balance | 20,619 | 20,619 | 20,619
Interest Expense | $ 955 | $ 854 | $ 773

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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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- Details
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- Details
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