Fair Value Measurements (Tables)

3 Months Ended

Oct. 31, 2016

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Accounted for at Fair Value on a Recurring Basis

	Inputs Considered As
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Fair Values		Balance Sheet Classifications
October 31, 2016
Trading securities	$	13,945	$	—	$	13,945	Other assets
Foreign exchange contracts	—		1,132		1,132		Prepaid expenses and other current assets
Total Assets	$	13,945	$	1,132	$	15,077
Foreign exchange contracts	$	—	$	628	$	628	Other current liabilities
Total Liabilities	$	—	$	628	$	628
July 31, 2016
Trading securities	$	13,834	$	—	$	13,834	Other assets
Foreign exchange contracts	—		2,138		2,138		Prepaid expenses and other current assets
Total Assets	$	13,834	$	2,138	$	15,972
Foreign exchange contracts	$	—	$	738	$	738	Other current liabilities
Total Liabilities	$	—	$	738	$	738