Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Basis of Presentation (Textual)
USF charges	$ 0.2	$ 0.2	$ 0.3	$ 0.5