Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
REVENUE
Products	$ 3,922	$ 4,269	$ 13,654	$ 13,412
Services	1,039	1,292	3,210	3,699
Net revenue	4,961	5,561	16,864	17,111
COST OF REVENUE
Products	3,182	3,134	10,784	10,107
Services	522	733	1,484	1,943
Cost of revenue	3,704	3,867	12,268	12,050
Gross profit	1,257	1,694	4,596	5,061
OPERATING EXPENSE
Selling, general and administrative	1,193	1,391	3,805	4,405
Research and development	149	121	361	391
Other operating expense (income), net	3	(15)	(14)	19
Total operating expense	1,345	1,497	4,152	4,815
Income (loss) from operations	(88)	197	444	246
Interest expense (income), net	20	(56)	102	238
Income (loss) before income taxes and discontinued operations	(108)	253	342	8
Income tax expense (benefit)	(4)	24	14	24
Net income (loss) from continuing operations	(104)	229	328	(16)
DISCONTINUED OPERATIONS
Loss from discontinued operations		(51)		(232)
Net income (loss)	(104)	178	328	(248)
Less: Net income (loss) attributable to noncontrolling interest	(57)	47	24	73
Net income (loss) attributable to common shareholders	(47)	131	304	(321)
COMPREHENSIVE INCOME (LOSS)
Net income (loss)	(47)	131	304	(321)
Realized gains on available-for-sale securities			5
Foreign currency translation adjustment				2
Comprehensive income (loss)	$ (47)	$ 131	$ 309	$ (319)
Weighted average shares outstanding
Basic	2,874	2,862	2,871	2,859
Diluted	2,874	2,864	2,871	2,859
Basic income (loss) per share:
From continuing operations	$ (0.02)	$ 0.07	$ 0.11	$ (0.03)
From discontinued operations		$ (0.02)		$ (0.08)
Basic income (loss) per share	$ (0.02)	$ 0.05	$ 0.11	$ (0.11)
Diluted income (loss) per share:
From continuing operations	$ (0.02)	$ 0.07	$ 0.11	$ (0.03)
From discontinued operations		$ (0.02)		$ (0.08)
Diluted income (loss) per share	$ (0.02)	$ 0.05	$ 0.11	$ (0.11)