Income Taxes (Details 2) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Net operating loss carryforwards	$ 1,833,100	$ 2,840,800
Tax credit and other carryforwards	413,800	344,800
Trade receivables	205,200	178,000
Inventories	70,600	28,200
Accrued vacation	38,800	35,400
Other	20,800	10,300
Total deferred taxes	2,582,300	3,437,500
Deferred tax liability:
Accumulated depreciation for tax purposes	(26,100)	(58,400)
Total deferred tax liabilities	(26,100)	(58,400)
Net deferred tax asset, before allowance	2,556,200	3,379,100
Valuation allowance	0	(3,379,100)
Net deferred tax asset	$ 2,556,200	$ 0