Earnings (Loss) Per Share (Tables)

9 Months Ended

Apr. 30, 2015

Earnings (Loss) Per Share [Abstract]

Schedule of weighted-average number of shares used in the calculation of basic and diluted earnings per share

	Three Months Ended April 30,				Nine Months Ended April 30,
	2015		2014		2015		2014
	(in thousands)
Basic weighted-average number of shares		11,449		11,339		11,426		10,878
Effect of dilutive securities:
Shares underlying stock options		5		7		6		—
Non-vested restricted Class B common stock		425		303		405		—
Diluted weighted-average number of shares		11,879		11,649		11,837		10,878

Summary of shares excluded from the diluted earnings per share computations

	Three Months Ended April 30,				Nine Months Ended April 30,
	2015		2014		2015		2014
	(in thousands)
Stock options		—		—		—		30
Non-vested restricted Class B common stock		—		—		—		474
Shares excluded from the calculation of diluted earnings (loss) per share		—		—		—		504