INCOME TAXES - Domestic and Foreign Components of Income Before Tax and Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Domestic and foreign components of income before tax for operations [Abstract]
Domestic	$ 33,837	$ 9,399	$ (5,942)
Foreign	22,865	25,208	(9,342)
Income (loss) before income taxes	56,702	34,607	(15,284)
Components of the provision for income taxes [Abstract]
Current – Federal	4,543	444	946
Current – State	557	371	91
Current – Foreign	13,272	6,972	3,088
Current income tax expense	18,372	7,787	4,125
Deferred – Federal	1,770	98	(393)
Deferred – State	(290)	0	(5)
Deferred -– Foreign	2,809	(3,751)	(158)
Deferred income tax expense (benefit)	4,289	(3,653)	(556)
Income tax provision	$ 22,661	$ 4,134	$ 3,569