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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Operating activities    
Net loss $ (197) $ (3,275)
Adjustments to reconcile net loss to net cash provided by/ (used in) operating activities:    
Depreciation 227 73
Amortization of right-of-use financing leases 205 124
Amortization of imputed interest (214)
Amortization of right-of-use operating leases 340 328
Change in receivable reserves 44 (141)
Stock-based compensation 962 716
Other (13)
Changes in current operating assets and liabilities:    
Accounts receivable 5,283 (2,642)
Inventories 291 (3,987)
Prepaid expenses and other assets 224 (67)
Income taxes (4) 27
Accounts payable and accrued liabilities (449) 1,796
Deferred revenue (6,204) 5,966
Operating lease liabilities (343) (325)
Net cash provided by/ (used in) operating activities 366 (1,621)
Investing activities    
Purchases of property and equipment (810) (174)
Net cash used in investing activities (810) (174)
Financing activities    
Net proceeds from the exercise of options for common stock 17
Principal repayments of financing leases (228) (136)
Net cash used in financing activities (228) (119)
Decrease in cash (672) (1,914)
Cash, beginning of period 10,296 11,699
Cash, end of period 9,624 9,785
Non-cash investing and financing activities:    
Acquisition of right-of-use assets and lease liabilities $ 551