Earnings (Loss) Per Share (Details) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Basic and Diluted weighted-average number of shares [Abstract]
Basic weighted-average number of shares	11,339	11,424	10,878	11,424
Effect of dilutive securities:
Stock options	7
Non-vested restricted Class B common stock	303
Diluted weighted-average number of shares	11,649	11,424	10,878	11,424