Earnings (Loss) Per Share (Tables)

9 Months Ended

Apr. 30, 2016

Earnings (Loss) Per Share [Abstract]

Summary of components of the earnings (loss) per common share calculation

	Three Months Ended April 30,				Nine Months Ended April 30,
	2016		2015		2016		2015
	(in thousands)
Basic weighted-average number of shares		11,905		11,449		11,856		11,426
Effect of dilutive securities:
Shares underlying stock options		—		5		—		6
Non-vested restricted Class B common stock		—		425		—		405
Diluted weighted-average number of shares		11,905		11,879		11,856		11,837

Summary of shares excluded from the diluted earnings per share computations

	Three Months Ended April 30,				Nine Months Ended April 30,
	2016		2015		2016		2015
	(in thousands)
Stock options		3		—		4		—
Non-vested restricted Class B common stock		179		—		175		—
Shares excluded from the calculation of diluted earnings (loss) per share		182		—		179		—