Loss Per Share (Tables)

3 Months Ended

Oct. 31, 2017

Loss Per Share [Abstract]

Summary of shares excluded from diluted earnings per share computations

	Three Months Ended October 31,
	2017		2016
	(in thousands)
Stock options		42		3
Warrants		60		—
Non-vested restricted Class B common stock		269		118
Shares excluded from the calculation of diluted loss per share		371		121

Schedule of number of stock options to purchase Class B common stock which were excluded from the diluted per share

	Three Months Ended October 31,
	2017		2016
	(in thousands)
Warrants		5		—
Stock options		—		88
Shares excluded from the calculation of diluted loss per share		5		88