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Repurchase Agreements (Details) - Securities Sold under Agreements to Repurchase [Member] - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
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Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] |  |
Carrying value of investment securities available for sale pledged as collateral under repurchase agreements | $ 302,600 | $ 288,100
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 262,295 | 251,225
Overnight and Continuous [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 106,779 | 105,670
Up to 30 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 64,000 | 500
30-90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 2,720 | 24,335
Greater Than 90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 88,796 | 120,720
U.S. Treasury and Government Agencies [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 105,155 | 78,280
U.S. Treasury and Government Agencies [Member] | Overnight and Continuous [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 21,892 | 19,184
U.S. Treasury and Government Agencies [Member] | Up to 30 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 30,072 | 0
U.S. Treasury and Government Agencies [Member] | 30-90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 261 | 10,401
U.S. Treasury and Government Agencies [Member] | Greater Than 90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 52,930 | 48,695
State and Political Subdivisions [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 70,113 | 69,985
State and Political Subdivisions [Member] | Overnight and Continuous [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 56,895 | 58,676
State and Political Subdivisions [Member] | Up to 30 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 5,008 | 494
State and Political Subdivisions [Member] | 30-90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 2,255 | 1,656
State and Political Subdivisions [Member] | Greater Than 90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 5,955 | 9,159
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 87,027 | 102,960
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] | Overnight and Continuous [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 27,992 | 27,810
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] | Up to 30 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 28,920 | 6
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] | 30-90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | 204 | 12,278
U.S. Government Sponsored Agency Mortgage-backed Securities [Member] | Greater Than 90 Days [Member] |  |
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract] |  |
Repurchase agreements and repurchase-to-maturity transactions | $ 29,911 | $ 62,866

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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5086-111524 + Details
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- Definition Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and elected not to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing -URI http://asc.fasb.org/extlink&oid=49203159 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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