Consolidated Statements Of Shareholders' Equity (USD $)	Common Stock [Member]	Warrants & Options [Member]	Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning Balance at Jul. 31, 2010	$ 8,000	$ 983,000	$ 95,748,000	$ (91,507,000)	$ (13,000)	$ 5,219,000
Beginning Balance, shares at Jul. 31, 2010	7,768,921
Stock-based compensation		109,000				109,000
Issuance of common stock under company 401(k) plan			60,000			60,000
Issuance of common stock under company 401(k) plan, shares	86,739
Issuance of common stock under executive bonus plan			20,000			20,000
Issuance of common stock under executive bonus plan, shares	33,140
Issuance of common stock under employee stock purchase plan			5,000			5,000
Issuance of common stock under employee stock purchase plan, shares	12,174
Issuance of common stock from exercise of stock options			1,000			1,000
Issuance of common stock from exercise of stock options, shares	800
Subtotal		109,000	86,000			195,000
Subtotal, shares	132,853
Net income				2,443,000		2,443,000
Foreign currency translation adjustments					(26,000)	(26,000)
Comprehensive income				2,443,000	(26,000)	2,417,000
Ending Balance at Jul. 31, 2011	8,000	1,092,000	95,834,000	(89,064,000)	(39,000)	7,831,000
Ending Balance, shares at Jul. 31, 2011	7,901,774
Stock-based compensation		195,000				195,000
Issuance of common stock under company 401(k) plan			55,000			55,000
Issuance of common stock under company 401(k) plan, shares	72,970
Issuance of common stock under executive bonus plan			9,000			9,000
Issuance of common stock under executive bonus plan, shares	10,589
Issuance of common stock under employee stock purchase plan			3,000			3,000
Issuance of common stock under employee stock purchase plan, shares	7,717
Issuance of common stock from exercise of stock options			30,000			30,000
Issuance of common stock from exercise of stock options, shares	44,700
Subtotal		195,000	97,000			292,000
Subtotal, shares	135,976
Net income				1,055,000		1,055,000
Foreign currency translation adjustments					38,000	38,000
Comprehensive income				1,055,000	38,000	1,093,000
Ending Balance at Jul. 31, 2012	$ 8,000	$ 1,287,000	$ 95,931,000	$ (88,009,000)	$ (1,000)	$ 9,216,000
Ending Balance, shares at Jul. 31, 2012	8,037,750