XML 64 R52.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Details 2) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Deferred Tax Assets:    
Accrued expenses $ 129,000 $ 183,000
Inventory reserve 3,000 42,000
Stock-based awards 78,000 52,000
Reserve for bad debts 5,000 50,000
Net operating loss and credit carryforwards 39,000 61,000
Other 23,000 25,000
Valuation allowance (79,000) (108,000)
Total deferred tax assets 198,000 305,000
Deferred Tax Liabilities:    
Depreciation (635,000) (465,000)
Prepaid expenses (67,000) (85,000)
Total deferred tax liabilities (702,000) (550,000)
Net deferred income tax liabilities $ (504,000) $ (245,000)