CONCENTRATION OF RISK - Revenues by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Concentration Risk [Line Items]
Revenues	$ 616,619	$ 553,525	$ 428,867
South Korea [Member]
Concentration Risk [Line Items]
Revenues	360,640	334,835	263,079
China [Member]
Concentration Risk [Line Items]
Revenues	230,582	192,079	142,076
Japan [Member]
Concentration Risk [Line Items]
Revenues	5,579	7,358	7,405
Other Non-U.S. Locations [Member]
Concentration Risk [Line Items]
Revenues	3,829	3,137	1,728
Total Non-U.S. Locations [Member]
Concentration Risk [Line Items]
Revenues	600,630	537,409	414,288
United States [Member]
Concentration Risk [Line Items]
Revenues	$ 15,989	$ 16,116	$ 14,579