Derivative Instruments (Tables)

3 Months Ended

Oct. 31, 2015

Derivative Instruments [Abstract]

Schedule of derivative instruments outstanding contracts

Settlement Date	U.S. Dollar Amount		NOK Amount
November 2015		3,750,000		30,426,025
December 2015		1,299,999		10,835,741
January 2016		3,000,000		24,257,100
February 2016		800,000		6,772,360
May 2016		1,000,000		8,238,600
July 2016		1,000,000		8,200,000

Schedule of derivative assets fair value

Asset Derivatives	Balance Sheet Location	October 31, 2015		July 31, 2015
		(in thousands)
Derivatives not designated or not qualifying as hedging instruments:
Foreign exchange forwards	Other current assets	$	144	$	38

Schedule of derivative liability fair value

Liability Derivatives	Balance Sheet Location	October 31,  2015		July 31,  2015
		(in thousands)
Derivatives not designated or not qualifying as hedging instruments:
Foreign exchange forwards	Other current liabilities	$	247	$	39

Schedule of derivative instruments on the consolidated statements of operations

		Amount of Gain (Loss) Recognized on Derivatives
		Three Months Ended October 31,
Derivatives not designated or not qualifying as hedging instruments	Location of Gain (Loss) Recognized on Derivatives	2015			2014
		(in thousands)
Foreign exchange forwards	Other (expense) income, net	$	(102	)	$	—