Stockholders' Equity (Tables)

6 Months Ended

Jan. 31, 2021

Stockholders' Equity Note [Abstract]

Schedule of amounts of share-based compensation expense

	Three months ended January 31,				Six months ended January 31,
	2021		2020		2021		2020
Stock options	$	175	$	301	$	341	$	518
Restricted stock		1		1		2		3
	$	176	$	302	$	343	$	521

Schedule of share-based payment arrangement

	Three months ended January 31,				Six months ended January 31,
	2021		2020		2021		2020
Selling, general and administrative	$	162	$	302	$	316	$	521
Cost of revenues		14		-		27		-
	$	176	$	302	$	343	$	521

Schedule of stock option activity

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value (000s)
Outstanding at July 31, 2020		2,636,496		$	4.05
Awarded		543,104		$	2.57
Exercised		—						$
Expired or forfeited		(408,539	)	$	2.91
Outstanding at end of period		2,771,061		$	3.80		3.0 years	$	114
Exercisable at end of period		1,566,259		$			1.9 years	$

Schedule of nonvested performance-based units activity

Grant Date	Total Grant		Forfeitures			Outstanding		Fair Market Value At Grant Date (000s)
10/15/2018		32,000		(6,000	)		26,000	$	107
10/15/2019		80,500		(14,500	)		66,000	$	222
10/19/2020		98,600		-			98,600	$	207