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ORGANIZATION, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenues from Strategic Partnering Collaboration And Licensing Agreements (Details) - Revenue from contract with customer - Customer concentration risk	3 Months Ended
	Mar. 31, 2023
Other license agreements
Concentration Risk [Line Items]
Percentage of revenues	2.00%
Biogen MA, Inc.
Concentration Risk [Line Items]
Percentage of revenues	84.00%
Kite Pharma, Inc.
Concentration Risk [Line Items]
Percentage of revenues	8.00%
Novartis Institutes for BioMedical Research, Inc.
Concentration Risk [Line Items]
Percentage of revenues	6.00%

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