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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Cash flows from operating activities:    
Net loss $ (41,428) $ (43,078)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 3,887 1,912
Depreciation of property and equipment 412 168
Amortization of deferred financing costs and loan discount 25 229
Loss on debt extinguishment 0 1,325
Changes in fair value of convertible preferred stock warrants 0 13,294
Changes in operating assets and liabilities:    
Accounts receivable (2,944) (1,279)
Inventory (3,077) (537)
Prepaid expenses and other current assets (1,634) (1,980)
Accounts payable 1,209 27
Accrued expenses 873 2,187
Net cash used in operating activities (42,677) (27,732)
Cash flows from investing activities:    
Purchase of property and equipment (685) (1,183)
Net cash used in investing activities (685) (1,183)
Cash flows from financing activities:    
Proceeds from the exercise of common stock options 184 23
Proceeds from Employee Stock Purchase Plan 587 0
Payments related to reverse stock split 0 (1)
Proceeds from the issuance of common stock, net of offering costs 0 133,161
Proceeds from debt financing 7,500 0
Debt financing costs (778) 0
Repayment on debt financing 0 (21,300)
Net cash provided by financing activities 7,493 111,883
Effect of currency exchange on cash and cash equivalents (9) (8)
Net change in cash and cash equivalents (35,878) 82,960
Cash and cash equivalents at beginning of year 142,072 59,112
Cash and cash equivalents at end of period 106,194 142,072
Supplemental Information:    
Cash paid for interest 59 1,706
Cash paid for income taxes 5 2
ROU assets exchanged for lease liabilities $ 579 $ 0