CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 6 months ended Jan. 31, 2018 - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Jul. 31, 2017	$ 465		$ 328,294	$ (241,900)	$ 2,013	$ 88,872
Balance, Shares (in Shares) at Jul. 31, 2017	46,506,176
Net loss for the period ended January 31, 2018				(1,541)		(1,541)
Cashless option exercise		$ (1,014)	1,014
Cashless option exercise, Shares (in Shares)	340,898	106,911
Vesting of restricted stock, Shares (in Shares)	2,062
Exercise of stock options	$ 6		704			$ 710
Exercise of stock options, Shares (in Shares)	228,704					569,602
Share-based compensation charges			413			$ 413
Foreign currency translation adjustments					(495)	(495)
Balance at Jan. 31, 2018	$ 471	$ (1,014)	$ 330,425	$ (243,441)	$ 1,518	$ 87,959
Balance, Shares (in Shares) at Jan. 31, 2018	47,077,840	106,911