Product Warranties (Tables)

3 Months Ended

Oct. 31, 2016

Schedule of Changes in Product Warranty Liabilities

Changes in our product warranty reserves are as follows:

	Three Months Ended October 31,
	2016			2015
Beginning balance	$	201,840		$	108,206
Provision		51,947			26,233
Payments		(44,799	)		(26,592	)
Ending balance	$	208,988		$	107,847