INCOME TAXES (Income tax provisions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 6,900	$ 4,600	$ 29,700
Foreign	15,100	14,300	10,200
State	1,400	1,200	1,100
Total current	23,400	20,100	41,000
Deferred:
Federal	(600)	3,600	(10,700)
Foreign	(2,500)	(2,600)	(4,500)
State	500	(6,200)	200
Total deferred	(2,600)	(5,200)	(15,000)
Current payable and deferred - Income tax provisions	$ 20,836	$ 14,890	$ 25,994