Earnings (Loss) Per Share (Tables)

9 Months Ended

Apr. 30, 2018

Earnings (Loss) Per Share [Abstract]

Summary of weighted-average number of shares used in the calculation of basic and diluted (loss) earnings per share

	Three Months Ended April 30,				Nine Months Ended April 30,
	2018		2017		2018		2017
	(in thousands)
Basic weighted-average number of shares		24,675		23,054		24,649		22,845
Effect of dilutive securities:
Stock options		—		—		—		49
Non-vested restricted Class B common stock		—		—		—		95
Diluted weighted-average number of shares		24,675		23,054		24,649		22,989

Summary of shares excluded from the diluted earnings per share

	Three Months Ended April 30,				Nine Months Ended April 30,
	2018		2017		2018		2017
	(in thousands)
Stock options		1,253		273		1,253		20
Non-vested restricted Class B common stock		191		212		191		—
Shares excluded from the calculation of diluted earnings per share		1,444		485		1,444		20