Valuation and Qualifying Accounts (Tables)

12 Months Ended

Aug. 31, 2017

Valuation and Qualifying Accounts

Schedule of Company's accounts receivable reserve

Year ended	Balance at Beginning of Year		Charges to Operations		Deductions to Reserves		Balance at End of Year
August 31, 2017	$	830	$	197	$	(571)	$	456
August 31, 2016	$	705	$	196	$	(71)	$	830
August 31, 2015	$	670	$	83	$	(48)	$	705

Schedule of Company's warranty reserve

Year ended	Balance at Beginning of Year		Charges to Operations		Deductions to Reserves		Balance at End of Year
August 31, 2017	$	—	$	220	$	—	$	220
August 31, 2016	$	230	$	143	$	(373)	$	—
August 31, 2015	$	270	$	44	$	(84)	$	230