Earnings Per Share (Tables)

9 Months Ended

Apr. 30, 2017

Earnings Per Share [Abstract]

Summary 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,
	2017		2016		2017		2016
	(in thousands)
Basic weighted-average number of shares		23,054		22,635		22,845		22,790
Effect of dilutive securities:
Stock options		—		—		49		—
Non-vested restricted Class B common stock		—		45		95		26
Diluted weighted-average number of shares		23,054		22,680		22,989		22,816

Summary of shares excluded from the diluted earnings per share

	Three Months Ended April 30,				Nine Months Ended April 30,
	2017		2016		2017		2016
	(in thousands)
Stock options		273		264		20		265
Non-vested restricted Class B common stock		212		—		—		—
Shares excluded from the calculation of diluted earnings per share		485		264		20		265