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Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Details    
Depreciation and amortization $ (1,432,275) $ (1,319,275)
Inventory 240,647 263,723
Accrued vacation 110,246 109,193
Allowance for doubtful accounts 53,625 53,625
Other, net (327) (1,350)
Deferred Tax Assets and Liabilities $ (1,028,084) $ (894,084)