SIGNIFICANT AGREEMENTS AND CONTRACTS - Revenues Disaggregated by Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	May 31, 2021	Sep. 30, 2019	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			$ 6,216	$ 32,863	$ 13,325	$ 35,271
Affiliated Entity | Mundipharma Medical Company | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	0	0	0
Affiliated Entity | Mundipharma Medical Company | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			1,923	2,715	4,449	5,123
Affiliated Entity | Mundipharma Medical Company | License of Intellectual Property
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue		$ 17,900
Affiliated Entity | Mundipharma Medical Company | Research and Development Services | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	0	0	0
Affiliated Entity | Mundipharma Medical Company | Research and Development Services | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			1,746	2,431	4,020	4,762
Affiliated Entity | Mundipharma Medical Company | Clinical Supply Services | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	0	0	0
Affiliated Entity | Mundipharma Medical Company | Clinical Supply Services | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			177	284	429	361
Affiliated Entity | Janssen Pharmaceuticals, Inc. | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	27,000	816	27,000
Affiliated Entity | Janssen Pharmaceuticals, Inc. | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			4,293	3,148	8,060	3,148
Affiliated Entity | Janssen Pharmaceuticals, Inc. | License of Intellectual Property
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	$ 27,000
Affiliated Entity | Janssen Pharmaceuticals, Inc. | License of Intellectual Property | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	27,000	816	27,000
Affiliated Entity | Janssen Pharmaceuticals, Inc. | License of Intellectual Property | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	0	0	0
Affiliated Entity | Janssen Pharmaceuticals, Inc. | Research and Development Services | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	0	0	0
Affiliated Entity | Janssen Pharmaceuticals, Inc. | Research and Development Services | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			2,629	1,675	4,985	1,675
Affiliated Entity | Janssen Pharmaceuticals, Inc. | Clinical Supply Services | Transferred at Point in Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			0	0	0	0
Affiliated Entity | Janssen Pharmaceuticals, Inc. | Clinical Supply Services | Transferred over Time | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			$ 1,664	$ 1,473	$ 3,075	$ 1,473