Income Taxes (Details 3) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Accrued expenses	$ 361,000	$ 35,000
Allowance for doubtful accounts	6,000	7,000
Deferred Revenue	2,000	3,000
Reserve for obsolescence	72,000	109,000
Expense associated with non-qualified stock options	115,000	100,000
Revenue Sharing Agreement	681,000	1,781,000
General business credit	1,258,000	1,156,000
NOL carryforward	15,139,000	12,987,000
Deferred tax assets	17,634,000	16,178,000
Less: valuation allowance	$ (17,634,000)	$ (16,178,000)	$ (15,028,000)
Deferred tax asset, net