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UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from continuing operating activities:    
Loss from continuing operations $ (7,682,247) $ (4,753,545)
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) continuing operating activities:    
Depreciation 366,616 390,437
Provision for (recovery from) credit losses 30,000 (100)
Amortization of right-of-use assets 91,673 123,909
Stock-based compensation expense 1,516,341 1,061,755
Change in warranty reserves 40,000 0
Change in inventory reserves (212,939) (394,386)
Changes in operating assets and liabilities:    
Accounts receivable 3,176,676 449,564
Inventories (8,230,819) 588,495
Prepaid expenses and other current assets (84,240) 1,556
Security deposits 3,019 0
Accounts payable 4,459,116 1,466,737
Accrued expenses and other current liabilities 5,999,492 (1,580,362)
Operating lease liabilities (101,826) (127,974)
Net cash used in continuing operating activities (629,138) (2,773,914)
Cash flows from continuing investing activities:    
Purchases of property and equipment (125,393) (56,197)
(Purchase) sale of marketable securities (14,175,356) 2,184,302
Net cash (used in) provided by continuing investing activities (14,300,749) 2,128,105
Cash flows from continuing financing activities:    
Proceeds from exercise of stock options 188,204 1,000,780
Payment of withholding taxes on stock-based awards (1,196,880) (303,477)
Net cash (used in) provided by continuing financing activities (1,008,676) 697,303
Net change in cash, cash equivalents, and restricted cash from continuing operations (15,938,563) 51,494
Net cash flow from discontinued operating activities (157,274) 1,269,614
Net cash flow from discontinued investing activities 0 (117,132)
Net cash flow from discontinued financing activities 0 0
Net change in cash, cash equivalents, and restricted cash from discontinued operations (157,274) 1,152,482
Effect of exchange rate changes on cash   460,851
Net change in cash, cash equivalents, and restricted cash (16,095,837) 1,664,827
Cash, cash equivalents, and restricted cash, beginning of period: 33,374,976 6,794,093
Cash, cash equivalents, and restricted cash, end of period 17,279,139 8,458,920
Continuing Operations    
Supplemental disclosure of cash flow information:    
Cash paid during the period for income taxes 12,930 8,400
Discontinued Operations    
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) continuing operating activities:    
Stock-based compensation expense $ 0 66,580
Supplemental disclosure of cash flow information:    
Cash paid during the period for interest   26,793
Cash paid during the period for income taxes   $ 270,354