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CONCENTRATION OF RISK - Revenues by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Concentration Risk [Line Items]
Revenues	$ 650,611	$ 647,684	$ 576,429
South Korea [Member]
Concentration Risk [Line Items]
Revenues	383,500	397,822	322,509
China [Member]
Concentration Risk [Line Items]
Revenues	238,208	229,439	229,727
Japan [Member]
Concentration Risk [Line Items]
Revenues	2,818	3,609	6,971
Other Non-U.S. Locations [Member]
Concentration Risk [Line Items]
Revenues	1,657	2,456	4,411
Total Non-U.S. Locations [Member]
Concentration Risk [Line Items]
Revenues	626,183	633,326	563,618
United States [Member]
Concentration Risk [Line Items]
Revenues	$ 24,428	$ 14,358	$ 12,811

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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