Derivative Instruments (Tables)

9 Months Ended

Apr. 30, 2017

Derivative Instruments [Abstract]

Schedule of derivative instruments on the consolidated statements of operations

		Amount of Gain (Loss) Recognized on Derivatives
		Three Months Ended April 30,				Nine Months Ended  April 30,
Derivatives not designated or not qualifying as hedging instruments	Location of Gain (Loss) Recognized on Derivatives	2017		2016		2017		2016
		(in thousands)
Foreign exchange forwards	Other (expense) income, net	$	—	$	156	$	—	$	(68	)