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SIGNIFICANT AGREEMENTS AND CONTRACTS - Revenues Disaggregated by Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	May 31, 2021	Sep. 30, 2019	Mar. 31, 2022	Mar. 31, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue			$ 7,109	$ 2,408
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
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			2,526	2,408
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
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			2,274	2,331
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
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			252	$ 77
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			816
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			3,767
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			816
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
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
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			2,356
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
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			$ 1,411

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- Definition

Amount of revenue from collaborative arrangement. Excludes revenue from contract with customer under Topic 606.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 808
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123385629&loc=SL5834089-161433

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 808
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434

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