CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Jul. 31, 2011	$ 390	$ (6,387)	$ 305,833	$ (214,914)	$ 3,793	$ 88,715
Balance (in Shares) at Jul. 31, 2011	39,045,837	450,014
Net (loss) for the year ended				(39,269)		(39,269)
Vesting of restricted stock	2					2
Vesting of restricted stock (in Shares)	174,638
Share-based compensation charges			719			719
Issuance of treasury stock for employee 401(k) plan match		3,313	(2,664)			649
Issuance of treasury stock for employee 401(k) plan match (in Shares)		(233,458)
Issuance of common stock for services	3		470			473
Issuance of common stock for services (in Shares)	275,000
Foreign currency translation adjustments					(2,188)	(2,188)
Balance at Jul. 31, 2012	395	(3,074)	304,358	(254,183)	1,605	49,101
Balance (in Shares) at Jul. 31, 2012	39,495,475	216,556
Net (loss) for the year ended				(18,237)		(18,237)
Vesting of restricted stock	2					2
Vesting of restricted stock (in Shares)	157,784
Share-based compensation charges			545			545
Net proceeds from Issuance of common stock	9		1,816			1,825
Net proceeds from Issuance of common stock (in Shares)	906,715					906,715
Issuance of treasury stock for employee 401(k) plan match		3,074	(2,458)			616
Issuance of treasury stock for employee 401(k) plan match (in Shares)		(216,556)
Issuance of common stock for employee 401(k) plan match			27			27
Issuance of common stock for employee 401(k) plan match (in Shares)	9,419					9,419
Foreign currency translation adjustments					253	253
Balance at Jul. 31, 2013	406		304,288	(272,420)	1,858	34,132
Balance (in Shares) at Jul. 31, 2013	40,569,393
Net (loss) for the year ended				(9,977)		(9,977)
Vesting of restricted stock	1					1
Vesting of restricted stock (in Shares)	82,968
Share-based compensation charges			594			594
Net proceeds from Issuance of common stock	34		11,508			11,542
Net proceeds from Issuance of common stock (in Shares)	3,421,176
Issuance of options in lieu of payment of cash bonuses			136			136
Issuance of common stock for employee 401(k) plan match	2		634			636
Issuance of common stock for employee 401(k) plan match (in Shares)	165,646					165,646
Foreign currency translation adjustments					(114)	(114)
Balance at Jul. 31, 2014	$ 443		$ 317,160	$ (282,397)	$ 1,744	$ 36,950
Balance (in Shares) at Jul. 31, 2014	44,239,183