NET REVENUES FROM COLLABORATIONS - Net Revenue from Collaborators (Detail) - Net revenues from collaborations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total revenues	$ 546,185	$ 134,912	$ 180,953
Roche
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total revenues	337,802	0	0
Regeneron Pharmaceuticals
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total revenues	100,468	87,844	113,226
Novartis AG
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total revenues	86,727	43,159	49,120
Other
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total revenues	$ 21,188	$ 3,909	$ 18,607