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Borrowings - Summary of Information Pertaining to Borrowings (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Long Term And Short Term Debt [Line Items] |  |
Short-term borrowings | $ 656,987 | $ 710,832
Long-term borrowings | 59,737 | 60,332
Total Borrowings | $ 716,724 | $ 771,164
Short-term borrowings, Weighted Average Rate | 0.83% | 0.70%
Long-term borrowings, Weighted Average Rate | 3.43% | 3.30%
Total Borrowings, Weighted Average Rate | 1.05% | 0.90%
Securities Sold under Repurchase Agreements |  |
Long Term And Short Term Debt [Line Items] |  |
Short-term borrowings | $ 46,987 | $ 50,832
Short-term borrowings, Weighted Average Rate | 0.01% | 0.01%
Short-Term Borrowings |  |
Long Term And Short Term Debt [Line Items] |  |
Short-term borrowings | $ 610,000 | $ 660,000
Short-term borrowings, Weighted Average Rate | 0.89% | 0.76%
Other Long-Term Borrowings |  |
Long Term And Short Term Debt [Line Items] |  |
Long-term borrowings | $ 14,118 | $ 14,713
Long-term borrowings, Weighted Average Rate | 2.92% | 2.91%
Junior Subordinated Debt Securities |  |
Long Term And Short Term Debt [Line Items] |  |
Long-term borrowings | $ 45,619 | $ 45,619
Long-term borrowings, Weighted Average Rate | 3.59% | 3.42%

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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: 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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