Fair Value Measurements (Tables)

3 Months Ended

Oct. 31, 2015

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, 2015
Trading securities	$	13,945	$	—	$	13,945	Other assets
Foreign exchange contracts	—		629		629		Prepaid expenses and other current assets
Total Assets	$	13,945	$	629	$	14,574
Foreign exchange contracts	$	—	$	1,265	$	1,265	Other current liabilities
Total Liabilities	$	—	$	1,265	$	1,265
July 31, 2015
Trading securities	$	15,356	$	—	$	15,356	Other assets
Foreign exchange contracts	—		685		685		Prepaid expenses and other current assets
Total Assets	$	15,356	$	685	$	16,041
Foreign exchange contracts	$	—	$	1,280	$	1,280	Other current liabilities
Total Liabilities	$	—	$	1,280	$	1,280