Income Taxes (Details 1) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets (liabilities)
Net operating loss carryforwards	$ 8,162,123	$ 11,956,967
Accrued compensation	31,844	35,249
Depreciation	42,688	46,975
Section 263a inventory adjustment	29,171	43,787
Stock-based compensation	688,148	765,928
Outside basis difference in joint venture	(224,725)	(705,500)
Other	28,232	33,189
Total	8,757,481	12,176,595
Less: Valuation allowance	(8,757,481)	(12,176,595)
Net deferred tax asset	$ 0	$ 0