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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Cash flows provided by (used in) operating activities:    
Net income (loss) $ 15 $ (345)
Depreciation and amortization 76 48
Impairment of inventory 8
Impairment of software 51
Non-cash lease expense 63 59
Stock-based compensation 30 53
Change in operating assets and liabilities:    
(Increase) decrease in accounts receivable (104) 292
Increase in inventory (22) (298)
Decrease (increase) in deferred COGS 44 (117)
Increase in other current assets and other assets (119) (1)
Increase (decrease) in accounts payable and accrued expenses 64 (125)
Increase in deferred revenue 196 242
Decrease in operating lease liability (67) (62)
(Decrease) increase in other current liabilities and non-current liabilities (29) 9
Net cash provided by (used in) operating activities 155 (194)
Cash flows used in investing activities:    
Investments in technology (37) (266)
Other capital investments (3)
Net cash used in investing activities (37) (269)
Cash flows used in financing activities:    
Warrant exercise proceeds 5
Net cash provided by financing activities 5
Net increase (decrease) in cash 123 (463)
Cash at the beginning of the year 1,450 1,722
Cash at the end of the period 1,573 1,259
Cash paid during the period for:    
Interest 1 1
Non-cash investing and financing activities:    
Accrued preferred dividends to former CEO of OmniMetrix $ 2 $ 2