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MAJOR CUSTOMERS, PARTNERSHIPS AND STRATEGIC ALLIANCES - California Institute for Regenerative Medicine (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
May 31, 2018 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |  |  |
Revenues |  | $ 28,563 | $ 57,763 | $ 82,715 | $ 92,392 |
Other non-current liabilities |  | 7,631 |  | 7,631 |  | $ 7,011
California institute for regenerative medicine agreement |  |  |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |  |  |
Funds due under the agreement | $ 8,000 |  |  |  |  |
Other non-current liabilities |  | $ 7,000 |  | 7,000 |  | $ 6,400
California institute for regenerative medicine agreement | Research grants |  |  |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |  |  |
Revenues |  |  |  | $ 5,200 |  |

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