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Related Party Transactions	12 Months Ended
Related Party Transactions	Jul. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	17 — Related Party Transactions The Company leases certain of its facilities from officers of the Company under various lease agreements. Rental payments under these leases totaled $0.1 million, $0.8 million, and $1.4 million for the years ended July 31, 2016, 2015 and 2014, respectively. During the year ended July 31, 2016, the Company acquired interest in a partnership, partially owned by an executive, which held the lease on property where the Company is operating a facility which totaled $2.0 million. During the year ended July 31, 2015, the Company purchased a property previously leased from an executive for $11.9 million. During the year ended July 31, 2014, the Company purchased three commercial properties from an executive who relocated to the corporate headquarters in Dallas, Texas for $1.8 million. There were no amounts due to or from related parties as of July 31, 2016 and 2015 that are not separately or previously disclosed.