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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Operating activities:    
Net income $ 31 $ 178
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 173 155
Fair market value (gain) / loss on digital assets 76
Stock-based compensation expense 11
Deferred tax benefit (16) 11
Bad debt expense 15 4
Changes in operating assets and liabilities:    
Accounts receivable (24) 49
Inventory 72 (10)
Prepaid expenses and other assets (23) (40)
Accounts payable 78 110
Accrued expenses and other current liabilities 260 266
Deferred revenue (4) (28)
Right of use assets and liabilities, net (6) (6)
Net cash provided by operating activities 632 700
Investing activities:    
Purchases of property, equipment and software development costs (29) (24)
Net cash used in investing activities (29) (24)
Financing activities:    
Repayments of finance lease obligations (4) (3)
Proceeds from stock option exercise 10 64
Private purchase of common shares (1,027)
Stock repurchase under Stock Buyback Plan (383) (469)
Net cash used in financing activities (377) (1,435)
Net change in cash 226 (759)
Cash at beginning of period 2,012 2,641
Cash at end of period $ 2,238 $ 1,882