Stockholders' Equity (Tables)

6 Months Ended

Jan. 31, 2020

Stockholders' Equity Note [Abstract]

Share-based Payment Arrangement, Cost by Plan [Table Text Block]

The amounts of share-based compensation expense recognized in the periods presented are as follows:

	Three months ended January 31,				Six months ended January 31,
	2020		2019		2020		2019
Stock options	$	301	$	289	$	518	$	521
Restricted stock		1		2		3		5
	$	302	$	291	$	521	$	526

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

The following table sets forth the amount of expense related to share-based payment arrangements included in specific line items in the accompanying statements of operations:

	Three months ended January 31,				Six months ended January 31,
	2020		2019		2020		2019
Selling, general and administrative	$	302	$	291	$	521	$	526
	$	302	$	291	$	521	$	526

Share-based Payment Arrangement, Option, Activity [Table Text Block]

The following table summarizes stock option activity during the six month period ended January 31, 2020:

	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		1,500			$3.32
Exercised		—			—			$	—
Cancelled or expired		(455,576	)		$3.58
Outstanding at end of period		1,896,964			$4.75		2.7 years	$	—
Exercisable at end of period		1,486,162			$5.11		1.4 years	$	—

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

The following table summarizes PSU’s granted and outstanding as of January 31, 2020:

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