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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Cash flows from operating activities:    
Net loss $ (1,342,376) $ (1,380,700)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Depreciation and amortization 813,556 816,334
Interest from amortization of debt costs 0 18,560
Stock-based compensation on stock options, RSUs & RSAs, net 240,075 284,598
Provision for doubtful accounts receivable 19 (12,452)
Change in operating lease assets and liabilities 24,946 (43,531)
Deferred taxes 2,979 (29,596)
Changes in operating assets and liabilities:    
Trade accounts receivable 1,399,160 639,725
Other receivables (27,083) (82,391)
Inventories 144,978 (20,282)
Prepaid expenses and other assets 13,335 10,874
Accounts payable and accrued liabilities (129,600) (616,494)
Net cash provided by (used in) operating activities 1,139,989 (415,355)
Cash flows from investing activities:    
Purchase of property and equipment (955,002) (243,393)
Acquisition of Visimid Technologies, net of cash acquired 572,141 0
Proceeds from sale-leaseback of equipment 364,710 0
Net cash used in investing activities (1,162,433) (243,393)
Cash flows from financing activities:    
Proceeds from sale of common stock from Employee Stock Purchase Plan 19,719 19,870
Payments on loans payable (206,518) (169,902)
Repayment of finance lease obligations (27,062) (37,079)
Net cash used in financing activities (213,861) (187,111)
Effect of exchange rate on cash and cash equivalents (48,227) (363,163)
Change in cash, cash equivalents and restricted cash (284,532) (1,209,022)
Cash and cash equivalents and restricted cash, beginning of period 7,144,490 5,507,891
Cash, cash equivalents and restricted cash, end of period 6,859,958 4,298,869
Supplemental disclosure of cash flow information:    
Interest paid in cash 58,397 48,803
Income taxes paid 33,407 140,756
Supplemental disclosure of non-cash investing & financing activities:    
Purchase of equipment through finance lease arrangements $ 46,688 $ 0