Fair Value Measurements (Tables)

3 Months Ended

Oct. 31, 2018

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, 2018
Trading securities	$	14,060	$	—	$	14,060	Other assets
Foreign exchange contracts	—		891		891		Prepaid expenses and other current assets
Total Assets	$	14,060	$	891	$	14,951
Foreign exchange contracts	$	—	$	505	$	505	Other current liabilities
Total Liabilities	$	—	$	505	$	505
July 31, 2018
Trading securities	$	14,383	$	—	$	14,383	Other assets
Foreign exchange contracts	—		1,077		1,077		Prepaid expenses and other current assets
Total Assets	$	14,383	$	1,077	$	15,460
Foreign exchange contracts	$	—	$	3	$	3	Other current liabilities
Total Liabilities	$	—	$	3	$	3