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Related Party Transactions (Details) - Straight Path [Member] - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Estimated liability to stright path included in other current liabilities
Balance at beginning of year	$ 1,860	$ 931
Additional liability	1,793	$ 1,930
Adjustments	(556)
Payments	(2,811)	$ (1,001)
Balance at end of year	$ 286	$ 1,860

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- Definition

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