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SHORT-TERM BORROWINGS (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Summary of the Use of Short-Term Borrowings | 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 |
Summary of the Use of Securities Sold Under Agreements to Repurchase | 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 |

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- Definition Schedule of assets sold under agreements to Repurchase. + References No definition available. + Details
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- Definition Tabular disclosure of short-term debt arrangements (having initial terms of repayment within one year or the normal operating cycle, if longer) including: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation. + References Reference 1: 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 + Details
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