Commitments and Contingencies (Details Textual) (USD $)	12 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jun. 20, 2012 sqft	Jul. 31, 2010 sqft
Commitments and Contingencies (Textual) [Abstract]
Operating lease rent	$ 242,000	$ 278,000
Lease office and warehouse space			11,321
Sub lease				2,002
Expiry date of leasing in Puerto Rico Industrial Development Company	Aug. 01, 2019
Monthly rent	12,000
Personal property tax	320,000
Personal property tax including interest and penalties	530,000
Company's Liability	$ 80,000	$ 80,000
Caguas Puerto Rico [Member]
Operating Leased Assets [Line Items]
Lease office and warehouse space in Corinth, Mississippi	17,236
Corinth Mississippi [Member]
Operating Leased Assets [Line Items]
Lease office and warehouse space in Corinth, Mississippi				77,000
Year 1999 [Member]
Operating Leased Assets [Line Items]
Income tax examination year under examination	2011
Year 2000 [Member]
Operating Leased Assets [Line Items]
Income tax examination year under examination	2011