INCOME TAXES AND RELATED PAYMENTS - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. federal income tax	$ (93)	$ 4,645	$ 4,085
State and local income tax	1,674	2,934	2,687
Foreign income tax	7,933	7,402	5,907
Current	9,514	14,981	12,679
Deferred:
U.S. federal income tax	519	8,934	191,488
State and local income tax	(158)	844	10,928
Foreign income tax	(255)	20	347
Deferred	106	9,798	202,763
Total:
U.S. federal income tax	426	13,579	195,573
State and local income tax	1,516	3,778	13,615
Foreign income tax	7,678	7,422	6,254
Income tax expense	$ 9,620	$ 24,779	$ 215,442