Annual report [Section 13 and 15(d), not S-K Item 405]

INCOME TAXES - Unrecognized Tax Benefits (Details)

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INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Gross unrecognized tax benefits      
Balance at the beginning of the year $ 8,672 $ 9,426 $ 9,186
Decrease related to prior year tax positions   (843)  
Increase related to current year tax positions 108 89 240
Balance at the end of the year 8,780 8,672 $ 9,426
Unrecognized tax benefits decrease, evaluation of prior orphan drug credits   $ 4,700  
Tax positions subject to interest or penalties $ 0