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Balance Sheet Details (Tables) | 12 Months Ended
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Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Summary of Short-Term Investments | The following is a summary of our short-term investments (in thousands):
|  | December 31, 2020 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
U.S. treasury bills and government agency obligations |  | $ | 20,110 |  |  | $ | 166 |  |  | $ | — |  |  | $ | 20,276 |
U.S. corporate debt |  |  | 11,505 |  |  |  | 42 |  |  |  | — |  |  |  | 11,547 |
Foreign corporate debt |  |  | 15,508 |  |  |  | 49 |  |  |  | — |  |  |  | 15,557 |
U.S. commercial paper |  |  | 13,997 |  |  |  | — |  |  |  | — |  |  |  | 13,997 |
Foreign commercial paper |  |  | 41,976 |  |  |  | — |  |  |  | — |  |  |  | 41,976 |
Total |  | $ | 103,096 |  |  | $ | 257 |  |  | $ | — |  |  | $ | 103,353 |
|  | December 31, 2019 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
U.S. treasury bills and government agency obligations |  | $ | 140,567 |  |  | $ | 59 |  |  | $ | — |  |  | $ | 140,626 |
U.S. corporate debt securities |  |  | 80,159 |  |  |  | 11 |  |  |  | — |  |  |  | 80,170 |
Foreign corporate debt securities |  |  | 23,188 |  |  |  | 15 |  |  |  | — |  |  |  | 23,203 |
U.S. commercial paper |  |  | 32,801 |  |  |  | — |  |  |  | — |  |  |  | 32,801 |
Foreign commercial paper |  |  | 42,274 |  |  |  | — |  |  |  | — |  |  |  | 42,274 |
Total |  | $ | 318,989 |  |  | $ | 85 |  |  | $ | — |  |  | $ | 319,074 |
Schedule of Inventory | Inventory consists of the following (in thousands):
|  | December 31, |
|  | 2020 |  |  | 2019 |
Raw materials |  | $ | 18,994 |  |  | $ | 6,635 |
Work in process |  |  | 6,847 |  |  |  | 12,571 |
Finished goods |  |  | 16,064 |  |  |  | 5,762 |
Total inventory |  | $ | 41,905 |  |  | $ | 24,968 |
Schedule of Property and Equipment, Net | Property and equipment, net consists of the following (in thousands):
|  | December 31, |
|  | 2020 |  |  | 2019 |
Scientific equipment |  | $ | 29,135 |  |  | $ | 24,603 |
Leasehold improvements |  |  | 878 |  |  |  | 206 |
Computer equipment and software |  |  | 1,461 |  |  |  | 1,314 |
Furniture, fixtures and office equipment |  |  | 2,135 |  |  |  | 1,520 |
Property and equipment, gross |  |  | 33,609 |  |  |  | 27,643 |
Less: accumulated depreciation and amortization |  |  | (10,872 | ) |  |  | (8,025 | )
Property and equipment, net |  | $ | 22,737 |  |  | $ | 19,618 |
Schedule of Accrued Liabilities | Accrued payroll and employee liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2020 |  |  | 2019 |
Accrued employee salaries and benefits |  | $ | 1,691 |  |  | $ | 3,047 |
Accrued bonuses |  |  | 8,479 |  |  |  | 9,545 |
Accrued vacation |  |  | 3,427 |  |  |  | 2,656 |
Total accrued payroll and employee liabilities |  | $ | 13,597 |  |  | $ | 15,248 |
Other accrued liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2020 |  |  | 2019 |
Accrued product sales allowances |  | $ | 24,571 |  |  | $ | 27,939 |
Accrued consulting and professional fees |  |  | 3,450 |  |  |  | 7,742 |
Accrued accounts payable |  |  | 104 |  |  |  | 310 |
Other accrued liabilities |  |  | 244 |  |  |  | 544 |
Total other accrued liabilities |  | $ | 28,369 |  |  | $ | 36,535 |

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