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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Cash flows from operating activities    
Net loss $ (17,213) $ (13,190)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 688 674
Provision for inventory obsolescence 158 15
Loss on disposal of property and equipment 76 47
Stock based compensation 5,056 3,747
Provision for allowance for doubtful accounts 283 57
Changes in operating assets and liabilities:    
Trade receivables 3,273 (3,168)
Prepaid expenses and other assets (521) (23)
Income tax receivables 97 0
Inventories (5,672) (1,982)
Accounts payable (439) 1,555
Accrued and other liabilities (1,536) 1,605
Net cash used in operating activities (15,750) (10,663)
Cash flows from investing activities    
Purchases of property and equipment (868) (391)
Net cash used in investing activities (868) (391)
Cash flows from financing activities    
Proceeds from stock option exercises 365 49
Repayment of finance lease liabilities (138) (181)
Contributions from non-controlling interests 0 195
Net cash provided by financing activities 227 63
Effect of exchange rates on cash 354 (26)
Net change in cash and cash equivalents (16,037) (11,017)
Cash and cash equivalents, beginning of period 30,870 41,915
Cash and cash equivalents, end of period 14,833 30,898
Cash paid for:    
Interest 12 8
Income taxes 128 13
Non cash activities:    
Right-of-use assets capitalized and operating lease liabilities recognized upon lease modification 769 0
Right-of-use assets capitalized and finance lease liabilities recognized upon execution of lease 103 0
Right-of-use assets and finance lease liabilities derecognized upon execution of lease modification $ 28 $ 0