Related Party Transactions (Details) $ in Millions	12 Months Ended
Jul. 31, 2015 USD ($) yr director	Jul. 31, 2014 USD ($)	Jul. 31, 2013 USD ($)
BCRC [Member]
Right to appoint the number of directors \| director	4
Number of directors \| director	9
Management agreement renewable period, years \| yr	1
Management fees and reimbursement of operating expenses	$ 7.1	$ 7.0	$ 7.0
Slifer Smith and Frampton and Vail Associates Real Estate Llc Ssf and Vare [Member]
Ownership interest	50.00%
Real Estate Commission Expense	$ 0.0	0.0	0.3
Real estate revenue from leases	$ 0.5	$ 0.5	$ 0.5

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

-URI http://asc.fasb.org/extlink&oid=16382449

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.6-07.1(c))

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

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