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Income Taxes (Details 1) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Deferred tax assets (liabilities):    
Inventories $ 104,190 $ 103,909
Stock options and other 93,985 88,303
Alternative Minimum Tax credit carryforward 24,674 24,674
Contingencies and accruals 152,846 157,936
Property and equipment (214,383) (454,788)
Net operating loss carryforward 12,174,859 11,136,538
Goodwill and intangibles 0 (4,687)
Total deferred tax assets, net 12,336,171 11,051,886
Valuation allowance $ (12,336,171) $ (11,051,886)