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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK: (Tables) | 12 Months Ended
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Dec. 31, 2018
Risks and Uncertainties [Abstract] |
Summary of Commitment and Contingent Liabilities | Commitment and contingent liabilities are summarized as follows at December 31:
(Dollar amounts in thousands) |  | 2018 |  | 2017
Home Equity |  | $ | 57,341 |  |  | $ | 57,060 |
Commercial Operating Lines |  | 285,524 |  |  | 246,855 |
Other Commitments |  | 81,593 |  |  | 83,786 |
TOTAL |  | $ | 424,458 |  |  | $ | 387,701 |
Commercial letters of credit |  | $ | 4,673 |  |  | $ | 5,012 |

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