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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, 2015 | Dec. 31, 2014
Short-term Debt [Line Items] |  |
Securities sold under agreements to repurchase | $ 254,242 | $ 276,980
FHLB advances | 140,000 | 0
Total short-term borrowings | 394,242 | 276,980
Repurchase agreements |  |
Short-term Debt [Line Items] |  |
Total short-term borrowings | 254,242 | 276,980
Highest month-end balance | 278,324 | 307,025
Average daily balance | $ 257,622 | $ 262,709
Weighted-average interest rate: |  |
As of year-end | 0.17% | 0.18%
Paid during the year | 0.18% | 0.19%
FHLB Advances |  |
Short-term Debt [Line Items] |  |
Total short-term borrowings | $ 140,000 | $ 0
Highest month-end balance | 140,000 | 0
Average daily balance | $ 1,096 | $ 561
Weighted-average interest rate: |  |
As of year-end | 0.56% | 0.00%
Paid during the year | 0.59% | 0.10%

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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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