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Investments in Affiliates (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 31, 2017 | Jul. 31, 2016 | Jul. 31, 2015
Investments in equity method affiliates | $ 7.6 | $ 7.5 |
Undistributed earnings of equity method affiliates | 4.3 | 4.2 |
Distributions received from equity method affiliates | $ 1.9 | 1.3 | $ 1.0
Slifer, Smith, and Frampton/Vail Associates Real Estate, LLC ("SSF/VARE") [Member] |  |  |
Ownership interest | 50.00% |  |
KRED [Member] |  |  |
Ownership interest | 50.00% |  |
Clinton Ditch and Reservoir Company [Member] |  |  |
Ownership interest | 43.00% |  |
Slifer Smith and Frampton and Vail Associates Real Estate Llc Ssf and Vare [Member] |  |  |
Real estate revenue from leases | $ 0.4 | $ 0.4 | $ 0.5
Ownership interest | 50.00% |  |

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