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COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Mar. 31, 2021
Commitments, Contingent Liabilities and Restrictions [Abstract] |  |
Contract amount of commitments and contingencies | $ 1,352,781 | $ 1,315,491
Expense recorded for litigation accrual | 3,000 |
Minimum [Member] |  |
Commitments, Contingent Liabilities and Restrictions [Abstract] |  |
Range of reasonably possible losses for such matters in the aggregate, beyond the existing recorded liability |  | 0
Maximum [Member] |  |
Commitments, Contingent Liabilities and Restrictions [Abstract] |  |
Range of reasonably possible losses for such matters in the aggregate, beyond the existing recorded liability |  | 1,000
Commitments to Extend Credit [Member] |  |
Commitments, Contingent Liabilities and Restrictions [Abstract] |  |
Contract amount of commitments and contingencies | 1,313,568 | 1,277,853
Standby Letters of Credit [Member] |  |
Commitments, Contingent Liabilities and Restrictions [Abstract] |  |
Contract amount of commitments and contingencies | $ 39,213 | $ 37,638

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