Commitments - Schedule of Future Minimum Rental Commitments Under Non-cancelable Leases (Details) $ in Thousands	Jul. 31, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2017	$ 7
Total	$ 7

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant