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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 USD ($) Segment shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) | Apr. 22, 2022 shares
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Cash, cash equivalents, and restricted cash | $ 16,595,000 | $ 34,593,000 | $ 46,032,000 |
Credit loss allowance of accounts receivable | 0 | 0 |  |
Products recall reserves | $ 600,000 | 1,900,000 |  |
Impairment expense on recoverability of inventory |  | 14,600,000 |  |
Operating segments (number) | Segment | 1 |  |  |
Number of reportable segment | Segment | 1 |  |  |
ASU 2023-07 |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] | true |  |  |
ASU 2020-06 |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] | true |  |  |
Cost of Product Revenue |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Impairment expense on recoverability of inventory |  | $ 14,600,000 |  |
December 2020 Public Offering | Pre-funded Warrants |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of outstanding warrants issued to purchase common stock (in shares) | shares | 7,516,267 | 3,200,000 |  |
April 2022 Public Offering | Pre-funded Warrants |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of outstanding warrants issued to purchase common stock (in shares) | shares | 7,516,267 | 3,200,000 |  | 11,666,667
6.0% April 2020 and March 2019 Convertible Senior Notes |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Interest rate | 6.00% |  |  |
Minimum |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Contract with customer, payment term | 70 days |  |  |
Maximum |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Contract with customer, payment term | 90 days |  |  |
Customer contract cost, amortization periods | 1 year |  |  |

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