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Stock-Based Compensation - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
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Jan. 01, 2024 shares | Jan. 01, 2022 shares | Sep. 30, 2025 USD ($) $ / shares shares | Feb. 28, 2025 $ / shares shares | Nov. 30, 2022 USD ($) $ / shares shares | Jul. 31, 2021 shares | Jul. 31, 2020 | Sep. 30, 2025 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2025 USD ($) Installment $ / shares shares | Sep. 30, 2024 USD ($) $ / shares shares | Dec. 31, 2024 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  |  |  |  | 2,685,546 |  |  |  |  |  |
Inventory, net | $ |  |  | $ 25,395 |  |  |  |  | $ 25,395 |  | $ 25,395 |  | $ 25,907
Percentage of number of shares of common stock outstanding |  |  |  |  |  |  | 1.00% |  |  |  |  |
Intrinsic value of stock options exercised | $ |  |  |  |  |  |  |  | $ 0 | $ 100 | $ 100 | $ 300 |
Granted |  |  |  |  |  |  |  |  |  | 2,100,000 |  |
Weighted Average Grant Date Fair Value issue | $ / shares |  |  |  |  |  |  |  | $ 0.58 | $ 0.74 | $ 0.86 | $ 2.06 |
Fair value of common stock Per Share | $ / shares |  |  |  |  |  |  |  | $ 0.58 | $ 0.74 | $ 0.86 | $ 2.06 |
Liability for unvested shares | $ |  |  | $ 12,700 |  |  |  |  | $ 12,700 |  | $ 12,700 |  |
Selling, general and administrative | $ |  |  |  |  |  |  |  | 15,018 | $ 12,955 | $ 48,357 | $ 48,973 |
Unrecognized stock based compensation expense, Weighted average recognition period |  |  |  |  |  |  |  |  |  | 2 years 3 months 18 days |  |
Stock based compensation expense | $ |  |  |  |  |  |  |  | $ 3,073 | 2,866 | $ 9,079 | 16,731 |
Weighted average exercise price of Warrant Per Share | $ / shares |  |  | $ 3.48 |  |  |  |  | $ 3.48 |  | $ 3.48 |  |
2020 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  | 485,615 |  |  |  |  | 485,615 |  | 485,615 |  |
Shares available for future issuance |  |  | 0 |  |  |  |  | 0 |  | 0 |  |
Award vesting period |  |  |  |  |  |  |  |  |  | 4 years |  |
Issuance of common stock, shares |  |  |  |  |  |  |  |  |  | 8,000,000 |  |
Grant exercise price, percentage of estimated fair value of common stock on date of grant (not less than) |  |  |  |  |  |  |  |  |  | 110.00% |  |
Combined voting power on all classes of stock threshold |  |  |  |  |  |  |  |  |  | 10.00% |  |
Percentage of options vesting |  |  |  |  |  |  |  |  |  | 25.00% |  |
Number of quarterly installments for vesting | Installment |  |  |  |  |  |  |  |  |  | 36 |  |
Share-based payment award, expiration period |  |  |  |  |  |  |  |  |  | 10 years |  |
Number of quarterly installments for vesting succeeding period |  |  |  |  |  |  |  |  |  | 3 years |  |
2021 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  | 35,797,059 |  |  | 35,075,122 |  | 35,797,059 |  | 35,797,059 |  |
Issuance of common stock, shares | 3,304,820 | 5,539,145 |  |  |  | 11,413,572 |  |  |  |  |  |
Percentage of number of shares of common stock outstanding |  |  |  |  |  | 5.00% |  |  |  |  |  |
Stock based compensation expense | $ |  |  |  |  |  |  |  |  |  | $ 200 | $ 100 |
2021 Equity Incentive Plan | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares available for future issuance |  |  |  |  |  | 23,661,550 |  |  |  |  |  |
Two Thousand And Twenty Two Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  | 589,957 |  |  |  |  | 589,957 |  | 589,957 |  |
Two Thousand And Twenty One Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  | 752,816 |  |  | 1,342,773 |  | 752,816 |  | 752,816 |  |
Shares available for future issuance |  |  | 12,941,157 |  |  |  |  | 12,941,157 |  | 12,941,157 |  |
Stock based compensation expense | $ |  |  |  |  |  |  |  | $ 100 | $ 100 |  |  |
Two Thousand And Twenty Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares available for future issuance |  |  | 0 |  |  |  |  | 0 |  | 0 |  |
Php Warrants Outstanding |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, shares |  |  |  |  | 6,824,712 |  |  | 0 | 0 | 0 | 0 |
Repurchased common stock, per share | $ / shares |  |  |  |  | $ 3.48 |  |  |  |  |  |  |
Warrant expense | $ |  |  |  |  | $ 17,400 |  |  |  |  |  |  |
Exercisable common stock |  |  | 6,824,712 |  |  |  |  | 6,824,712 |  | 6,824,712 |  |
Weighted average exercise price of Warrant Per Share | $ / shares |  |  | $ 3.48 |  |  |  |  | $ 3.48 |  | $ 3.48 |  |
Weighted-average remaining contractual term (Years) |  |  |  |  |  |  |  |  |  | 7 years 1 month 17 days |  |
Employee Stock Option | 2021 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  | 22,370,287 |  |  |  |  | 22,370,287 |  | 22,370,287 |  |
Employee Stock Option | Two Thousand And Twenty Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  | 485,615 |  |  |  |  | 485,615 |  | 485,615 |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  | 400,000 | 1,700,000 |  |  |  |  |  |  |  |
Weighted Average Grant Date Fair Value issue | $ / shares |  |  | $ 1.15 | $ 1.61 |  |  |  |  |  |  |  |
Fair value of common stock Per Share | $ / shares |  |  | $ 1.15 | $ 1.61 |  |  |  |  |  |  |  |
Liability for unvested shares | $ |  |  | $ 2,100 |  |  |  |  | $ 2,100 |  | $ 2,100 |  |
Unrecognized stock based compensation expense, Weighted average recognition period |  |  |  |  |  |  |  |  |  | 1 year 7 days |  |

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