Stockholders' Equity (Tables)

9 Months Ended

Apr. 30, 2020

Stockholders' Equity Note [Abstract]

Schedule of share-based payment arrangement, cost by plan

	Three months ended April 30,				Nine months ended April 30,
	2020		2019		2020		2019
Stock options	$	206	$	289	$	724	$	521
Restricted stock		1		2		4		5
	$	207	$	291	$	728	$	526

Schedule of share-based payment arrangement, expensed and capitalized, amount

	Three months ended April 30,				Nine months ended April 30,
	2020		2019		2020		2019
Selling, general and administrative	$	207	$	291	$	728	$	526
	$	207	$	291	$	728	$	526

Schedule of share-based payment arrangement, option, activity

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value (000s)
Outstanding at July 31, 2019		2,351,040		$	4.53
Awarded		773,032		$	2.40
Exercised		—			—			$	—
Cancelled or expired		(485,076	)	$	3.71
Outstanding at end of period		2,638,996		$	4.05		3.2 years	$	637
Exercisable at end of period		1,457,162		$	5.10		1.7 years	$	78

Schedule of nonvested performance-based units activity

Grant Date	Total Grant		Forfeitures			Outstanding		Fair Market Value At Grant Date (000s)
7/31/2018		32,000		(4,000	)		28,000	$	124
1/3/2019		80,500		(10,500	)		70,000	$	196
2/25/2020		98,600		—			98,600	$	217