XML 41 R27.htm IDEA: XBRL DOCUMENT v3.10.0.1
Product Warranty Provisions (Tables)
9 Months Ended
Sep. 30, 2018
Product Warranties Disclosures [Abstract]  
Schedule of Accrued Warranty

Accrued warranty, which is included in other accrued liabilities, consists of the following:

 

    September 30,
2018
    December 31,
2017
 
Warranty accrual, beginning of the fiscal period   $ 164,365     $ 222,845  
Accrual adjustment for product warranty     19,941       32,679  
Payments made     (36,016 )     (91,159 )
Warranty accrual, end of the fiscal period   $ 148,290     $ 164,365