Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Oct. 31, 2014
Commitments and Contingencies [Abstract]
Litigation settlement date	September 15, 2014
Litigation Settlement, Amount	$ 0.1us-gaap_LitigationSettlementAmount

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration