TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
TAXES
Effective tax rate (as a percent)			18.20%	30.90%
Income taxes receivable	$ 25,063		$ 25,063		$ 24,894
Income tax provision	4,325	$ (1,134)	5,835	$ (1,043)
Tax benefit for employee stock-based compensation	262	206	531	389
Liability for uncertain tax positions recorded	0	$ 0	0	$ 0
Change in uncertain tax positions, increase	0		0
Change in uncertain tax positions, decrease	$ 12,000		$ 12,000