INCOME TAXES - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current -
Federal	$ (6,348)	$ 5,396	$ 8,058
State	(240)	1,976	2,416
Foreign	2,624	2,982	2,629
Total current	(3,964)	10,354	13,103
Deferred -
Federal	(10,567)	2,372	2,389
State	(3,126)	(249)	123
Foreign	(1,039)	(1,283)	(1,508)
Total deferred	(14,732)	840	1,004
Total income tax expense (benefit)	$ (18,696)	$ 11,194	$ 14,107

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