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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Cash flows provided by operating activities:    
Net income $ 1,464 $ 1,078
Depreciation and amortization 85 91
Deferred tax expense 255
Decrease in the provision for credit loss (7)
Impairment of inventory 15 21
Non-cash lease expense 99 97
Stock-based compensation 126 52
Change in operating assets and liabilities:    
Decrease (increase) in accounts receivable 928 (351)
(Increase) decrease in inventory (749) 282
Decrease in deferred COGS 341 644
Decrease in other current assets and other assets 40 37
Decrease in state income tax receivable 10
Decrease in deferred revenue (756) (1,200)
Decrease in operating lease liability (72) (108)
Increase in state income tax payable 27
(Decrease) increase in accounts payable, accrued expenses, other current liabilities and non-current liabilities (18) 103
Net cash provided by operating activities 1,795 739
Cash flows used in investing activities:    
Investments in technology (13) (44)
Leasehold improvements (4)
Patents (1)
Purchases of furniture and equipment (7) (4)
Net cash used in investing activities (25) (48)
Cash flows provided by financing activities:    
Stock repurchases held in Treasury (16)
Stock option exercise proceeds 87 13
Net cash provided by financing activities 71 13
Net increase in cash 1,841 704
Cash at the beginning of the period 2,326 1,449
Cash at the end of the period 4,167 2,153
Cash paid during the year for:    
Interest 1
Income Taxes 39 2
Non-cash investing and financing activities:    
Right-of-use assets 1,025
Operating lease liability 1,025
Accrued preferred dividends to former CEO of OmniMetrix $ 3 $ 3