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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows provided by operating activities:    
Net income $ 344 $ 15
Depreciation and amortization 58 76
(Decrease) increase in the provision for credit loss (7)
Impairment of inventory 19 8
Non-cash lease expense 64 63
Stock-based compensation 38 30
Change in operating assets and liabilities:    
Decrease (increase) in accounts receivable 3 (104)
Decrease (increase) in inventory 212 (22)
Decrease in deferred COGS 451 44
Increase in other current assets and other assets (56) (119)
(Decrease) increase in deferred revenue (1,004) 196
Decrease in operating lease liability (71) (67)
Decrease in accounts payable, accrued expenses, other current liabilities and non-current liabilities (10) 35
Net cash provided by operating activities 41 155
Cash flows used in investing activities:    
Investments in technology (36) (37)
Equipment purchases (4)
Net cash used in investing activities (40) (37)
Cash flows provided by financing activities:    
Stock option exercise proceeds 13
Warrant exercise proceeds 5
Net cash provided by financing activities 13 5
Net increase in cash 14 123
Cash at the beginning of the period 1,449 1,450
Cash at the end of the period 1,463 1,573
Cash paid during the year for:    
Interest 1 1
 Income Taxes 2
Non-cash investing and financing activities:    
Accrued preferred dividends to former CEO of OmniMetrix $ 2 $ 2