v3.26.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Operating activities:    
Net loss $ (1,220,400) $ (6,445,400)
Less: Income from discontinued operations, net of tax 559,900 1,578,200
Loss from continuing operations (1,780,300) (8,023,600)
Adjustments to reconcile net loss to net cash used in operating activities:    
Gain on disposition of discontinued operations (5,263,400) 0
Provision for bad debt 7,300 2,000
Provision for inventory reserves (757,400) 359,800
Depreciation and amortization 610,000 750,700
Impairment of Intangible Assets 291,600 0
Stock-based compensation 520,700 1,165,400
(Gain) loss on sale of investment securities (20,100) 6,700
Unrealized holding loss (gain) on investment securities 2,400 (25,900)
Noncash lease expense 257,100 326,600
Changes in operating assets and liabilities:    
Trade accounts receivable (291,200) 578,100
Inventories (682,100) 2,477,600
Prepaid expense and other current assets (791,100) 87,500
Income tax receivable 0 87,800
Other assets 24,800 2,600
Accounts payable 166,400 (418,000)
Accrued expenses (212,400) (133,300)
Contract liabilities 36,300 40,100
Lease liabilities (268,200) (330,200)
Net cash used in operating activities (8,149,600) (3,046,100)
Investing activities:    
Redemption of investment securities 3,745,700 3,527,500
Purchase of investment securities (7,465,700) (562,600)
Proceeds from disposition of discontinued operations 7,614,200 0
Capital expenditures (63,200) (98,900)
Net cash provided by investing activities 3,831,000 2,866,000
Financing activities:    
Proceeds from issuance of common stock 2,050,000 716,800
Issuance cost of common stock and warrants (97,800) (71,100)
Net cash provided by financing activities 1,952,200 645,700
Discontinued Operations:    
Net cash provided by (used in) operating activities of discontinued operations 2,694,800 (637,400)
Net change in cash 328,400 (171,800)
Effect of changes in foreign currency exchange rates on cash and cash equivalents 38,700 (36,400)
Cash and cash equivalents, beginning of year 587,900 796,100
Cash from discontinued operations beginning of year 0 0
Less cash from discontinued operations end of year 0 0
Cash and cash equivalents, end of year 955,000 587,900
Noncash financing activities:    
Record right-of-use assets 254,600 0
Record lease liabilities $ 254,600 $ 0