Description of Business and Summary of Significant Accounting Policies (Details) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Description of Business and Summary of Significant Accounting Policies [Abstract]
Basic	10,667	10,504
Effect of dilutive securities:
Stock options	9
Non-vested restricted Class B common stock	591
Diluted	11,267	10,504