Combined and Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jul. 31, 2015	Jul. 31, 2014
Net of allowance for doubtful accounts
Preferred stock, Par value	$ 0.01	$ 0.01
Preferred stock, Shares authorized	3,000	3,000
Preferred stock, Shares issued
Preferred stock, Shares outstanding
Common stock, Shares issued	60,000
Treasury stock, shares	42
Common Stock | Class A common stock
Common stock, Par value	$ 0.01	$ 0.01
Common stock, Shares authorized	2,000	2,000
Common stock, Shares issued	787	787
Common stock, Shares outstanding	787	787
Common Stock | Class B common stock
Common stock, Par value	$ 0.01	$ 0.01
Common stock, Shares authorized	40,000	40,000
Common stock, Shares issued	11,308	11,013
Common stock, Shares outstanding	11,266	11,013