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Summary of Significant Accounting Policies - Narrative (Details) |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 12, 2021 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) segment $ / shares shares | Dec. 31, 2023 USD ($) shares | Dec. 17, 2024 $ / shares | Mar. 04, 2024 | Jan. 12, 2024 $ / shares | Nov. 09, 2023 $ / shares | Nov. 08, 2023 shares | Feb. 23, 2023 $ / shares
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted cash, non-current |  |  | $ 0 | $ 373,000 |  |  |  |  |  |
Allowance for doubtful accounts |  |  | 0 | 0 |  |  |  |  |  |
Deferred fulfillment and prepaid launch costs |  |  | 2,600,000 | 1,700,000 |  |  |  |  |  |
Recorded revenue |  |  | 1,800,000 | 300,000 |  |  |  |  |  |
Contract with customer, liability |  |  | 2,200,000 | 1,000,000.0 |  |  |  |  |  |
Contract liabilities, non-current |  |  | 1,901,000 | 998,000 |  |  |  |  |  |
Service revenue |  |  | 2,114,000 | 3,089,000 |  |  |  |  |  |
Contract with customer, liability |  |  |  | 300,000 |  |  |  |  |  |
Warrants and rights outstanding, term (in years) |  |  |  |  |  | 5 years | 5 years |  |  |
Payment of liability |  | $ 10,000,000 |  |  |  |  |  |  |  |
Number of warrants outstanding (in shares) | shares |  |  |  |  |  |  |  |  | 122,572 |
Exercise price (in dollars per share) | $ / shares |  |  |  |  | $ 6.82 |  | $ 13.44 | $ 28.00 |  | $ 805.00
Issuance of pre-funded warrants and warrants in private placement, net of issuance costs |  |  | 2,443,000 |  |  |  |  |  |  |
Estimated fair value of warrants |  |  | 3,000 | 3,000 |  |  |  |  |  |
Impairments of long-lived assets |  |  | 0 | 0 |  |  |  |  |  |
Defined contribution plan, cost |  |  | $ 0 | $ 0 |  |  |  |  |  |
Number of reportable segments | segment |  |  | 1 |  |  |  |  |  |  |
Number of operating segments | segment |  |  | 1 |  |  |  |  |  |  |
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk | Geographic Distribution, Foreign |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of derived from customers |  |  | 14.00% |  |  |  |  |  |  |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Expected term |  |  | 6 months |  |  |  |  |  |  |
ESPP |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Offering period |  |  | 6 months |  |  |  |  |  |  |
Common Class A |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants and rights outstanding, term (in years) |  |  | 5 years |  |  |  |  |  |  |
Exchange ratio |  |  | 1 |  |  |  |  |  |  |
Exercise price (in dollars per share) | $ / shares |  |  | $ 8,050 |  | $ 6.08 |  |  |  |  |
Expiration period |  |  | 5 years |  |  |  |  |  |  |
Common Class B |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants and rights outstanding, term (in years) |  |  | 1 year 6 months |  |  |  |  |  |  |
Private Placement Warrant |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Number of warrants outstanding (in shares) | shares |  |  | 16,104 | 16,104 |  |  |  |  |  |
Estimated fair value of warrants | $ 31,200,000 |  |  |  |  |  |  |  |  |
Public Warrant |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Number of warrants outstanding (in shares) | shares |  |  | 12,322 | 12,322 |  |  |  |  |  |
Issuance of pre-funded warrants and warrants in private placement, net of issuance costs | $ 20,200,000 |  |  |  |  |  |  |  |  |
Patents |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Intangible asset useful life |  |  | 10 years |  |  |  |  |  |  |
Prepaid Expenses and Other Current Assets |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Deferred fulfillment and prepaid launch costs |  |  | $ 0 | $ 1,300,000 |  |  |  |  |  |
Other Noncurrent Assets |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Deferred fulfillment and prepaid launch costs |  |  | 2,600,000 | 400,000 |  |  |  |  |  |
Cash Designated for Collateral |  |  |  |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted cash, non-current |  |  | $ 0 | $ 400,000 |  |  |  |  |  |

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