INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax credit investments	$ 4,058		$ 4,058		$ 4,654
Unfunded commitments—tax credit investments	638		638		$ 665
Tax credits and other tax benefits recognized	285	$ 284	855	$ 852
Tax credit amortization expense included in provision for income taxes	$ 199	$ 168	$ 597	$ 504