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%

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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