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Short-term Borrowings | 12 Months Ended
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Dec. 31, 2014
Short-term Debt [Abstract] |
Short-term Borrowings | Short-term Borrowings Short-term borrowings at December 31 were as follows:
| 2014 |  | 2013 |  | 2012
| Ending Balance |  | Average Balance |  | Average Rate |  | Ending Balance |  | Average Balance |  | Average Rate |  | Ending Balance |  | Average Balance |  | Average Rate
| (dollars in thousands)
Federal funds purchased | $ | 9,000 |  |  | $ | 11,691 |  |  | 0.36 | % |  | $ | 16,000 |  |  | $ | 11,982 |  |  | 0.36 | % |  | $ | 34,000 |  |  | $ | 47,727 |  |  | 0.27 | %
Borrowings from FHLB | 945,000 |  |  | 644,651 |  |  | 0.31 |  |  | 478,100 |  |  | 335,449 |  |  | 0.27 |  |  | 178,100 |  |  | 214,703 |  |  | 0.25 |
Securities sold under agreements to repurchase | 151,876 |  |  | 159,051 |  |  | 0.24 |  |  | 132,515 |  |  | 130,957 |  |  | 0.25 |  |  | 144,127 |  |  | 139,766 |  |  | 0.28 |
Total | $ | 1,105,876 |  |  | $ | 815,393 |  |  | 0.30 |  |  | $ | 626,615 |  |  | $ | 478,388 |  |  | 0.26 |  |  | $ | 356,227 |  |  | $ | 402,196 |  |  | 0.27 |
Maximum total at any month-end | $ | 1,105,876 |  |  |  |  |  |  | $ | 626,615 |  |  |  |  |  |  | $ | 486,144 |  |  |  |  |
Weighted average rate at year-end |  |  |  |  | 0.30 | % |  |  |  |  |  | 0.27 | % |  |  |  |  |  | 0.25 | %
Interest expense on short-term borrowings for the years ended December 31 is detailed below:
| 2014 |  | 2013 |  | 2012
| (dollars in thousands)
Federal funds purchased | $ | 42 |  |  | $ | 43 |  |  | $ | 128 |
Borrowings from FHLB | 2,019 |  |  | 893 |  |  | 545 |
Securities sold under agreements to repurchase | 388 |  |  | 326 |  |  | 397 |
Total interest on short-term borrowings | $ | 2,449 |  |  | $ | 1,262 |  |  | $ | 1,070 |

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: 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 6: 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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