Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jul. 31, 2011
Liabilities recorded at fair value
Notes payable-related parties	$ 3,668	$ 3,678
Total	3,668	3,678
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Liabilities recorded at fair value
Notes payable-related parties
Total
Significant Other Observable Inputs (Level 2) [Member]
Liabilities recorded at fair value
Notes payable-related parties
Total
Significant Unobservable Inputs (Level 3) [Member]
Liabilities recorded at fair value
Notes payable-related parties	3,668	3,678
Total	$ 3,668	$ 3,678