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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 $ (32,398) $ (10,911)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 3,057 1,116
Stock-based compensation 5,730 4,484
Change in fair value of warrant liability (1,595) (8,102)
Financing costs - warrant issuances 1,576
Impairment of goodwill 9,946
Accrued interest on debt obligation 9 721
Interest portion of financing lease repayment (16)
Amortization of debt discount 2,091
Other 89 27
Changes in assets and liabilities    
Accounts receivable (808) (848)
Inventories (1,525) (1,418)
Prepaid expenses and other assets (59) 560
Tax credits and receivables 1,160 (484)
Accounts payable (94) 804
Right-of-use assets 578 252
Lease liabilities - operating (542) (236)
Deferred revenue and other liabilities (1,128) (72)
Net cash used in operating activities (16,020) (12,016)
Cash flows from investing activities:    
Purchases of property and equipment (988) (71)
Purchases of intangible assets (21) (165)
Proceeds from maturities of marketable securities 11,534 400
Purchases of marketable securities (488)
Cash acquired in business combination 6,464
Net cash provided by investing activities 10,037 6,628
Cash flows from financing activities:    
Proceeds from sale of common stock, net 2,099
Repayment of financing lease (61)
Repayment of loans (785)
Proceeds from exercise of stock options 37
Net proceeds from loan facility 1,262
Net proceeds from convertible debentures 9,055
Taxes paid to net share settle equity awards (120)
Net cash provided by financing activities 1,918 9,569
Net increase (decrease) in cash and cash equivalents (4,065) 4,181
Cash and cash equivalents at beginning of year 5,893 1,712
Cash and cash equivalents at end of year 1,828 5,893
Noncash investing and financing activities:    
Initial recognition of warrant liability 3,673
Recognition of right-of-use assets and lease liabilities 1,003
Unrealized loss on available-for-sale securities 26
Fair value of new warrant liability issued recognized as debt discount 2,604
Settlement of loan facility against tax receivables 1,097
Effect of business combination 37,627
Settlement of warrants to common stock 1,208
Conversion of convertible debentures into common stock $ 13,545