Related Party Transactions (Details Textual) (Management Company [Member], USD $)	12 Months Ended
Jul. 31, 2011	Jul. 31, 2010
Management Company [Member]
Management Fee, Amount Paid	$ 40,778	$ 55,691

Amount paid to managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_ManagementFeeAmountPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration