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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:    
Net loss $ (4,145) $ (5,630)
Adjustments to reconcile net loss to net cash used in operating activities:    
Share-based compensation expense 1,206 876
Depreciation and amortization 957 1,342
Deferred income tax benefit (2,150) (367)
Loss on sale of fixed assets 9 0
Foreign currency transaction (gains) losses 272 (58)
Gain on the forgiveness of long-term debt (2,173) 0
Changes in operating assets and liabilities:    
Accounts receivable (4,217) 2,975
Employee retention credit receivable (1,500) 0
Inventories 3,573 876
Prepaid income taxes 2,210 (2,226)
Other current and long-term assets 322 (198)
Accounts payable 2,534 (1,276)
Accrued liabilities and other liabilities 592 176
Net cash provided by operating activities (2,510) (3,510)
Cash flows from investing activities:    
Capital expenditures (1,384) (744)
Proceeds from sale of fixed assets 8 0
Collection (issuance) of note receivable 1,598 (600)
Net cash provided by (used in) investing activities 222 (1,344)
Cash flows from financing activities:    
Revolving credit line borrowings 0 2,756
Revolving credit line payments 0 (2,756)
Long-term debt borrowings 0 2,173
Proceeds from stock option exercises 436 375
Proceeds from the issuance of common stock 12,214 9,798
Payment of common stock issuance costs (1,014) (1,061)
Withholding taxes paid on stock issuance (133) (41)
Payment of bank financing costs (31) (213)
Net cash used in financing activities 11,472 11,031
Effect of exchange rate changes on cash and cash equivalents (86) (21)
Increase in cash and cash equivalents 9,098 6,156
Cash and cash equivalents, beginning of period 10,359 4,203
Cash and cash equivalents, end of period 19,457 10,359
Supplemental cash flow information:    
Interest paid 76 64
Income taxes paid 57 46
Non-cash capital expenditure items $ 82 $ 25