Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses (Details)

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Accrued Expenses (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Schedule of Accrued Expenses [Line Items]    
Accrued compensation $ 742,946 $ 616,029
Warranty reserve 307,581 358,296
Other 136,426 265,768
Accrued Liabilities, Current $ 1,186,953 $ 1,240,093