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Related Party Transactions (Details) $ in Millions | 12 Months Ended
--- | ---
Jul. 31, 2016 USD ($) yr director | Jul. 31, 2015 USD ($) | Jul. 31, 2014 USD ($)
Current Fiscal Year End Date | --07-31 |  |
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 | $ | $ 8.4 | $ 7.1 | $ 7.0
Slifer Smith and Frampton and Vail Associates Real Estate Llc Ssf and Vare [Member] |  |  |
Ownership interest | 50.00% |  |
Real estate revenue from leases | $ | $ 0.4 | $ 0.5 | $ 0.5

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