Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses (Components of Accrued Expenses) (Detail)

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Accrued Expenses (Components of Accrued Expenses) (Detail) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Accrued Liabilities [Line Items]    
Accrued Wages and Related Costs $ 169,047 $ 119,472
Accrued Officer Compensation 408,609 648,720
Accrued Professional Services 275,500 137,099
Accrued Warranty Obligations 114,056 41,132
Accrued Interest 183,553 375,560
Other Accrued Expenses 10,000 10,000
Total $ 1,160,765 $ 1,331,983