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COLLABORATION AGREEMENTS (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
COLLABORATION AGREEMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2022	Mar. 31, 2022	Jan. 31, 2024	Oct. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue		$ 72	$ 72
Research and development costs (excluding acquired in process cost)		76,835	40,944
Zenas BioPharma
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaboration arrangement, initial payment						$ 1,500
Research and development costs			400
Zenas BioPharma \| Fairmount Funds Management
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Noncontrolling interest ownership percentage						5.00%
Paragon Therapeutics
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaboration arrangement, initial payment							$ 5,300
Collaborative arrangement, upfront fee payment	$ 4,000				$ 2,500
Collaborative arrangement, rights and licenses fee				$ 2,300
Collaborative arrangement, milestone payment	3,500
Collaboration arrangement, future developments milestone payment obligation	16,000
Collaboration arrangement, future developments milestone payments		1,000
Collaboration arrangement, maximum milestone payments	40,000
Future developments milestone payments	3,100
Commercial milestone payments	$ 17,000
Research and development costs (excluding acquired in process cost)		4,500	700
Paragon Therapeutics \| Fairmount Funds Management
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Noncontrolling interest ownership percentage						5.00%
Collaboration Revenue \| Zenas BioPharma
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue		$ 100	$ 100