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Note L - Income Taxes - Deferred Tax Assets (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Allowance for Doubtful Accounts $ 2,000 $ 2,000
Warranty Reserve 5,000 5,000
Impaired Assets
Inventory Reserve 110,000 178,000
Deferred Officer's Compensation 816,000 820,000
Depreciation and Amortization (67,000) (103,000)
Net Operating Loss Carryforwards 17,993,000 16,504,000
Tax Credits 416,000 384,000
Other 10,000 (28,000)
Subtotal 19,285,000 17,762,000
Valuation allowance (19,285,000) (17,762,000)
Non-current deferred tax asset