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Note 9 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Accounts payable and accrued expenses $ 37,000 $ 31,000
Accounts receivable, net (757,000) (792,000)
Inventory obsolescence 2,000 2,000
Prepaid expenses (88,000) (110,000)
Operating lease liability (16,000) (10,000)
Customer deposits 26,000 198,000
Net current (764,000) (661,000)
NOL - State 4,000 4,000
Foreign tax credit 14,000 15,000
R&D tax credit 48,000 41,000
Book - Tax depreciation (33,000) (34,000)
Section 174 capitalization 0 105,000
Stock compensation 57,000 63,000
Investment impairment 13,000 13,000
Net long-term 103,000 207,000
Net deferred tax liability $ (661,000) $ (454,000)