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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Cash flows from operating activities:    
Net loss $ (6,724) $ (4,119)
Adjustments to reconcile net loss to net cash used in operating activities:    
Share-based compensation expense 581 695
Depreciation and amortization 625 486
Deferred income taxes (2,227) (1,153)
Gain on the sale of fixed assets 0 (8)
Foreign currency transaction losses 298 107
Changes in operating assets and liabilities:    
Accounts receivable (4,547) (2,350)
Inventories (3,250) 2,334
Prepaid income taxes (51) (90)
Other current and long-term assets 77 29
Accounts payable 789 1,012
Accrued liabilities and other liabilities (159) (862)
Net cash used in operating activities (14,588) (3,919)
Cash flows from investing activities:    
Capital expenditures (744) (159)
Proceeds from the sale of fixed assets 0 8
Collection of note receivable 0 1,598
Net cash (used in) provided by investing activities (744) 1,447
Cash flows from financing activities:    
Proceeds from stock option exercises 0 277
Withholding taxes paid on stock issuances (119) (100)
Payment of bank financing costs (10) (31)
Net cash (used in) provided by financing activities (129) 146
Effect of exchange rate changes on cash and cash equivalents (103) (73)
Decrease in cash and cash equivalents (15,564) (2,399)
Cash and cash equivalents, beginning of period 19,457 10,359
Cash and cash equivalents, end of period 3,893 7,960
Supplemental schedule of non-cash investing activities:    
Capital expenditures included in accounts payable $ 7 $ 100