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SHORT-TERM BORROWINGS | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
SHORT-TERM BORROWINGS | SHORT-TERM BORROWINGS The Company has short-term borrowing capability, including short-term borrowings from the FHLB, federal funds purchased and the FRB discount window. The following table summarizes the use of these short-term borrowings at and for the years ended December 31.
(Dollars in thousands) | 2017 |  | 2016 |  | 2015
Balance at year-end | $ | 50,000 |  |  | $ | 52,000 |  |  | $ | 60,000 |
Weighted average interest rate at year-end | 1.21 | % |  | 0.76 | % |  | 0.53 | %
Average balance during the year | $ | 54,610 |  |  | $ | 17,841 |  |  | $ | 55,106 |
Average interest rate during the year | 1.08 | % |  | 0.61 | % |  | 0.43 | %
Maximum month-end balance during the year | $ | 72,000 |  |  | $ | 52,000 |  |  | $ | 83,500 |
In addition, the Company has repurchase agreements with certain of its deposit customers. The Company is required to hold U.S. Treasury, U.S. Agency or U.S. GSE securities as underlying securities for Repurchase Agreements. The following table summarizes the use of securities sold under agreements to repurchase at and for the years ended December 31.
(Dollars in thousands) | 2017 |  | 2016 |  | 2015
Balance at year-end | $ | 43,576 |  |  | $ | 35,864 |  |  | $ | 29,156 |
Weighted average interest rate at year-end | 0.56 | % |  | 0.20 | % |  | 0.20 | %
Average balance during the year | $ | 43,205 |  |  | $ | 38,546 |  |  | $ | 30,156 |
Average interest rate during the year | 0.45 | % |  | 0.20 | % |  | 0.20 | %
Maximum month-end balance during the year | $ | 55,270 |  |  | $ | 52,693 |  |  | $ | 37,558 |
Fair value of securities underlying the agreements at year-end | 53,485 |  |  | 56,201 |  |  | 35,470 |
Federal funds purchased and securities sold under agreements to repurchase generally mature within one day from the transaction date.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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