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BALANCE SHEET DETAILS - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | $ 143,046 |  | $ 143,046 |  | $ 110,886
Less: accumulated depreciation and amortization | (46,378) |  | (46,378) |  | (35,216)
Total property and equipment, net | 96,668 |  | 96,668 |  | 75,670
Depreciation and amortization expense | 4,100 | $ 3,400 | 11,400 | $ 9,900 |
Increase in internal use software | 7,800 |  | 24,500 |  |
Laboratory and manufacturing equipment |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | 5,729 |  | 5,729 |  | 4,911
Computer equipment and software |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | 2,448 |  | 2,448 |  | 2,315
Furniture and fixtures |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | 4,198 |  | 4,198 |  | 4,119
Leasehold improvements |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | 23,533 |  | 23,533 |  | 23,144
Internal-use software |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | 60,001 |  | 60,001 |  | 44,877
Amortization | 3,100 | $ 2,500 | 8,600 | $ 7,200 |
Internal-use software in development |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | 37,482 |  | 37,482 |  | 28,069
Construction in progress |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property and equipment, gross | $ 9,655 |  | $ 9,655 |  | $ 3,451

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