Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses (Changes in Accrued Warranty Obligations) (Detail)

v3.8.0.1
Accrued Expenses (Changes in Accrued Warranty Obligations) (Detail)
9 Months Ended
Sep. 30, 2017
USD ($)
Class Of Warrant Or Right [Line Items]  
Accrued Warranty Obligations at December 31, 2016 $ 41,132
Reductions for Settling Warranties (102,260)
Warranties Issued During Period 175,184
Accrued Warranty Obligations at September 30, 2017 $ 114,056