SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Jul. 31, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

Year ended July 31,	Description	Balance at Beginning of Year		Charged (credited) to costs and expenses			Charged to other accounts	Deductions			Balance at end of Year
2020	Allowance for doubtful accounts receivable	$	166	$	28				—		$	194
2019	Allowance for doubtful accounts receivable		145		42			$	21	(1)		166
2018	Allowance for doubtful accounts receivable		147		—				2	(1)		145
2020	Deferred tax valuation allowance		23,527		6,550				—			30,077
2019	Deferred tax valuation allowance		24,471		(944	)			—			23,527
2018	Deferred tax valuation allowance	$	32,581	$	(8,110	)			—		$	24,471

(1) Write-off of uncollectible accounts receivable.