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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Cash Flows From Operating Activities    
Net loss $ (73,040) $ (100,185)
Adjustments to reconcile net loss to net cash used in operating activities:    
(Gain) loss on change of fair value of Sponsor Earn-Out liabilities (1,677) 5,306
Stock-based compensation 10,971 19,935
Depreciation and amortization 10,295 8,308
Accretion income from available-for-sale short-term investments (3,132) (7,215)
Loss on sale or disposal of fixed assets 1,306 701
Other 389 (1,323)
Changes in operating assets and liabilities:    
Receivable from related party   3,911
Accounts receivable (2,631) (950)
Inventories (1,035) 330
Prepaid expenses and other assets 9,982 (2,198)
Right-of-use assets 2,528 2,941
Deferred tax assets (137) (278)
Accounts payable 1,039 (72)
Operating lease liabilities (2,825) (2,915)
Accrued expenses and other liabilities (10,395) 7,618
Net cash used in operating activities (58,362) (66,086)
Cash Flows From Investing Activities    
Purchases of property and equipment (2,858) (12,206)
Acquisition of business, net of cash acquired (3,029)  
Proceeds from the sale of short-term investments 4,997  
Purchase of short-term investments (238,176) (215,102)
Proceeds from the maturities of short-term investments 199,880 335,500
Net cash (used in) provided by investing activities (39,186) 108,192
Cash Flows From Financing Activities    
Repurchase and retirement of Class A common stock (1,605)  
Payments for taxes withheld on vesting of restricted stock (433)  
Proceeds from stock option exercises 77 1,010
Net cash (used in) provided by financing activities (1,961) 1,010
Effect of exchange rates on cash 327 (687)
Net (decrease) increase in cash, cash equivalents and restricted cash (99,182) 42,429
Cash, cash equivalents and restricted cash at beginning of period (Note 6) 129,395 86,966
Cash, cash equivalents and restricted cash at end of period (Note 6) 30,213 129,395
Supplemental Cash and Non-Cash Information:    
Accounts payable and accrued expenses related to purchases of property and equipment 645 1,497
Income taxes paid   286
Deferred consideration payable for acquisition $ 8,770  
Lease liabilities arising from obtaining right-of-use assets   $ 12