INCOME TAXES - Summary of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 17,130	$ 277	$ 23,965
State	3,379	4,646	4,458
Foreign	3,764	6,037	3,376
Total current income tax expense	24,273	10,960	31,799
Deferred:
Federal	3,393	(11,069)	(177,272)
State	18,188	(11,284)	(13,710)
Foreign	(985)	(912)	(596)
Total deferred income tax expense (benefit)	20,596	(23,265)	(191,578)
Total income tax expense (benefit)	$ 44,869	$ (12,305)	$ (159,779)