Consolidated Statements of Stockholders' Equity and Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interest [Member]
Beginning Balance at Jul. 31, 2010	$ 6,946	$ 15	$ 56,269	$ (1,503)	$ (48,389)	$ 110	$ 444
Beginning Balance, Shares at Jul. 31, 2010		2,989,269		(139,580)
Issuance of common stock under employee stock purchase plan	19		19
Issuance of common stock under employee stock purchase plan, Shares		14,716
Stock - based compensation expense, stock options and ESPP	8		8
Subsidiary issuance of treasury stock	36						36
Change in ownership interest in subsidiary	0		(15)				15
Comprehensive income:
Foreign exchange gain on liquidation of foreign subsidiary	(107)					(107)
Foreign currency translation adjustments	2					2
Net income (loss)	(1,290)				(1,380)		90
Comprehensive income (loss)	(1,395)
Ending Balance at Jul. 31, 2011	5,614	15	56,281	(1,503)	(49,769)	5	585
Ending Balance, Shares at Jul. 31, 2011		3,003,985		(139,580)
Issuance of common stock under employee stock purchase plan	18		18
Issuance of common stock under employee stock purchase plan, Shares		12,773
Stock - based compensation expense, stock options and ESPP	7		7
Reissuance of treasury value			(2)	2
Reissuance of treasury shares				176
Comprehensive income:
Other	(5)					(5)
Net income (loss)	512				464		48
Comprehensive income (loss)	507
Ending Balance at Jul. 31, 2012	$ 6,146	$ 15	$ 56,304	$ (1,501)	$ (49,305)		$ 633
Ending Balance, Shares at Jul. 31, 2012		3,016,758		(139,404)