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LICENSE, COLLABORATION AND OTHER REVENUE - MTPC Collaboration Agreement - Narrative (Details) $ in Thousands		3 Months Ended
	Dec. 11, 2015 USD ($) performance_obligation	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenues		$ 53,544	$ 57,336
Accounts receivable, net		62,536		$ 47,031
Payables		8,386		$ 21,185
Revenue recognized		0	0
Tanabe Pharma Corporation
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenues	$ 9,000
Tanabe Pharma Corporation \| Royalty payments
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenues		300	400
Tanabe Pharma Corporation \| Regulatory Milestone Payments
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue	$ 25,000	25,000
Tanabe Pharma Corporation \| Development And Commercialize Collaboration Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of performance obligations \| performance_obligation	2
Tanabe Pharma Corporation \| Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront cash payment received	$ 20,000
Cost of research services	20,500
Milestone revenue	$ 10,000
Deferred revenue		0
Accounts receivable, net		0
Payables		0
Contract asset		300
Tanabe Pharma Corporation \| Mitsubishi Tanabe Pharma Corporation Supply Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferred revenue		0
Accounts receivable, net		0
Payables		0
Revenue recognized		$ 0	$ 0