Annual report pursuant to Section 13 and 15(d)

Accrued Expenses (Details)

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Accrued Expenses (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of Accrued Expenses [Line Items]      
Accrued compensation $ 616,029 $ 548,953  
Warranty reserve 358,296 143,364 $ 113,078
Other 265,768 80,802  
Accrued Liabilities, Current $ 1,240,093 $ 773,119