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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Operating activities    
Net loss $ (7,718) $ (9,690)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
Depreciation and amortization 307 631
Stock-based compensation 6,635 5,855
Non-cash operating lease cost 619 595
Net loss on sale of available-for-sale securities 0 2
Unrealized loss (gain) on investments 40 (116)
Loss on disposal of fixed assets   3
Non-cash interest expense 98 106
Foreign currency remeasurement loss (gain) 497 (177)
Changes in operating assets and liabilities:    
Accounts receivable 3,661 12,838
Inventories (6,333) 1,594
Prepaid and other assets (2,312) (119)
Accounts payable 5,037 (6,138)
Accrued liabilities and other non-current liabilities (2,426) (3,590)
Deferred revenue 1,051 165
Net cash (used in) provided by operating activities (844) 1,959
Investing activities    
Capital expenditures (112) (1,099)
Purchases of investments (7,964) (119)
Proceeds from maturities and sale of investments 6,887 2,664
Net cash (used in) provided by investing activities (1,189) 1,446
Financing activities    
Net proceeds from equity incentives 326 441
Net costs from public offerings (56) 0
Net proceeds from revolving line of credit 801 120
Proceeds from loans, net of issuance costs 0 5,000
Net cash provided by financing activities 1,071 5,561
Effect of exchange rates on cash, cash equivalents, and restricted cash 186 (90)
Net (decrease) increase in cash, cash equivalents, and restricted cash (776) 8,876
Cash, cash equivalents, and restricted cash, beginning of period 21,361 13,359
Cash, cash equivalents, and restricted cash, end of period $ 20,585 $ 22,235