INCOME TAXES - Income Tax Expense Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income from continuing operations	$ 25,635	$ 42,503	$ 38,859
Interest expense	200	300	100
Goodwill	0	900	0
Total income tax expense allocation	$ 25,800	$ 43,700	$ 38,900