INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Tax credit investments	$ 34,113		$ 34,113		$ 29,620
Unfunded commitments—tax credit investments	20,572		20,572		$ 20,235
Tax credits and other tax benefits recognized	981	$ 494	2,943	$ 1,482
Tax credit amortization expense included in provision for income taxes	$ 849	$ 405	$ 2,507	$ 1,215