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Short-Term Borrowings - Schedule of Short-Term Borrowings (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Short-term Debt [Line Items] |  |
Securities sold under agreements to repurchase | $ 209,795 | $ 254,242
FHLB advances | 185,000 | 140,000
Total short-term borrowings | 394,795 | 394,242
Repurchase agreements |  |
Short-term Debt [Line Items] |  |
Total short-term borrowings | 209,795 | 254,242
Highest month-end balance | 248,277 | 278,324
Average daily balance | $ 224,763 | $ 257,622
Weighted-average interest rate: |  |
As of year-end | 0.17% | 0.17%
Paid during the year | 0.16% | 0.18%
FHLB Advances |  |
Short-term Debt [Line Items] |  |
Total short-term borrowings | $ 185,000 | $ 140,000
Highest month-end balance | 185,000 | 140,000
Average daily balance | $ 15,694 | $ 1,096
Weighted-average interest rate: |  |
As of year-end | 0.80% | 0.56%
Paid during the year | 0.63% | 0.59%

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- Definition Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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