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Note 12 - Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Inventories $ 350,927 $ 176,022
Bad debts 36,480 23,197
Accrued liabilities 452,911 527,320
Prepaid expense (233,550) (103,037)
Depreciation and amortization (3,089,986) (2,464,503)
Capitalized costs 633,214 496,897
Research and development and other credit carryforwards 1,830,209 1,067,816
Right of use lease accounting 50,111 (149,876)
Capital loss carryforward 199,459 0
Directors stock option plan 211,838 203,914
Total deferred tax asset 441,613  
Total deferred tax liability   (222,250)
Valuation allowance (832,673) (33,000)
Reserve for uncertain tax positions 0 (55,000)
Total reserves & allowances (832,673) (88,000)
Net deferred tax liability, net of reserves $ (391,060) $ (310,250)