REVENUE AND GRANT INCOME RECOGNITION - Schedule of Revenues and Grant Income by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total revenues and grant income	$ 43,423	$ 20,804
United States
Disaggregation of Revenue [Line Items]
Total revenues and grant income	43,423	20,440
International
Disaggregation of Revenue [Line Items]
Total revenues and grant income	$ 0	$ 364

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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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