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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Operating activities:    
Net income $ 1,159 $ 1,376
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 467 488
Gain on sale of assets (1) (5)
Stock-based compensation expense 11 38
Deferred tax expense 12 15
Bad debt expense 52 39
Changes in operating assets and liabilities:    
Accounts receivable (158) (158)
Inventory 20 (232)
Prepaid expenses and other assets (958) (32)
Accounts payable 306 82
Accrued expenses and other current liabilities 1,227 584
Deferred revenue 661 435
Right of use assets and liabilities, net (18) (17)
Net cash provided by operating activities 2,780 2,613
Investing activities:    
Investment in BlueTrace (200)
Proceeds from sale of intangible assets 11
Purchases of property, equipment and software development costs (130) (87)
Net cash used in investing activities (119) (287)
Financing activities:    
Repayments of finance lease obligations (10) (9)
Proceeds from stock option exercise 84 49
Private purchase of common shares (1,027)
Stock repurchase under Stock Buyback Plan (1,592) (2,921)
Net cash used in financing activities (2,545) (2,881)
Net change in cash 116 (555)
Cash at beginning of period 2,641 4,368
Cash at end of period $ 2,757 $ 3,813