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Product Warranty Provisions (Tables)
6 Months Ended
Jun. 30, 2020
Guarantees and Product Warranties [Abstract]  
Schedule of Accrued Warranty

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

 

 

   June 30, 2020   December 31, 2019 
Warranty accrual, beginning of the fiscal period  $141,697   $149,464 
Accrual adjustment for product warranty   12,287    56,118 
Payments made   (26,279)   (63,885)
Warranty accrual, end of the fiscal period  $127,705   $141,697