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MAJOR CUSTOMERS, PARTNERSHIPS AND STRATEGIC ALLIANCES - Kite Pharma, Inc. (Detail) $ in Thousands | 1 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) | Apr. 30, 2018 USD ($) milestone option | Sep. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |
Accounts receivable |  |  | $ 4,522 | $ 6,013
Kite Pharma, Inc. | Collaboration And License Agreement |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |
Milestone payments received |  | $ 150,000 |  |
Development and sales-based milestone payments to be received |  | $ 3,000,000 |  |
Initial research term of agreement |  | 6 years |  |
Number of options to extend initial research term | option |  | 2 |  |
Extended research term of agreement |  | 1 year |  |
Separate upfront fee |  | $ 10,000 |  |
Collaborative arrangement estimated reimbursable service costs for new research plan | $ 3,400 |  |  |
Collaborative arrangement transaction price | 189,300 |  |  |
Revenues under agreement | 150,000 |  |  |
Collaborative arrangement estimated reimbursable service costs | $ 39,300 |  |  |
Accounts receivable |  |  | 600 | 100
Deferred revenue |  |  | $ 37,800 | $ 56,500
Kite Pharma, Inc. | Collaboration And License Agreement | Achievement of specified research, clinical development, regulatory and first commercial sale milestones |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |
Contingent development - and sales-based milestone payments to be received |  | 1,300,000 |  |
Kite Pharma, Inc. | Collaboration And License Agreement | Achievement of specified sales-based milestones if annual worldwide net sales of licensed products reach specified levels |  |  |  |
Research and Development Arrangement, Contract to Perform for Others [Line Items] |  |  |  |
Contingent development - and sales-based milestone payments to be received |  | $ 1,800,000 |  |
Maximum amount of achieved milestones to receive payment | milestone |  | 10 |  |

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