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Income Taxes (Details 2) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Deferred Tax Assets:    
Accrued expenses $ 105,000 $ 129,000
Inventory reserve 5,000 3,000
Stock-based awards 88,000 78,000
Reserve for bad debts 16,000 5,000
Net operating loss and credit carryforwards 715,000 39,000
Other 26,000 23,000
Valuation allowance (848,000) (79,000)
Total deferred tax assets 107,000 198,000
Deferred Tax Liabilities:    
Depreciation (18,000) (635,000)
Prepaid expenses (89,000) (67,000)
Total deferred tax liabilities (107,000) (702,000)
Net deferred income tax liabilities $ 0 $ (504,000)