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CONCENTRATION OF RISK - Revenues by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Concentration Risk [Line Items]
Total revenue	$ 152,157	$ 171,794	$ 294,368	$ 338,071
South Korea [Member]
Concentration Risk [Line Items]
Total revenue	87,411	86,522	180,580	173,855
China [Member]
Concentration Risk [Line Items]
Total revenue	59,089	75,920	102,733	147,012
Japan [Member]
Concentration Risk [Line Items]
Total revenue	211	1,701	582	2,114
Other Non-U.S. Locations [Member]
Concentration Risk [Line Items]
Total revenue	361	534	654	988
Total Non-U.S. Locations [Member]
Concentration Risk [Line Items]
Total revenue	147,072	164,677	284,549	323,969
United States [Member]
Concentration Risk [Line Items]
Total revenue	$ 5,085	$ 7,117	$ 9,819	$ 14,102

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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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