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INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Income Tax Disclosure [Abstract]      
Tax credit investments $ 32,613   $ 33,528
Unfunded commitments—tax credit investments 15,383   $ 18,306
Tax credits and other tax benefits recognized 1,068 $ 1,007  
Tax credit amortization expense included in provision for income taxes $ 915 $ 809