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Short-Term Borrowings - Schedule of Short-Term Borrowings (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Short-term Debt [Line Items] |  |
Securities sold under agreements to repurchase and federal funds purchased | $ 242,029 | $ 244,168
Federal Home Loan Bank advances | 0 | 100,000
Total short-term borrowings | 242,029 | 344,168
Repurchase agreements and Federal Funds Purchased |  |
Short-term Debt [Line Items] |  |
Total short-term borrowings | 242,029 | 244,168
Highest month-end balance | 280,863 | 302,946
Average daily balance | 251,868 | 257,341
Weighted-average interest rate: |  |
As of year-end | 0.19% | 0.23%
Paid during the year | 0.21% | 0.26%
FHLB Advances |  |
Short-term Debt [Line Items] |  |
Total short-term borrowings | 0 | 100,000
Highest month-end balance | 0 | 100,000
Average daily balance | $ 1,255 | $ 1,320
Weighted-average interest rate: |  |
As of year-end | 0.00% | 0.38%
Paid during the year | 0.41% | 0.28%

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- Definition Federal Home Loan Bank borrowings due within one year of the 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 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 9 + Details
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