Fair Value Measurements (Tables)

6 Months Ended

Jan. 31, 2016

Fair Value Measurements [Abstract]

Summary of balance of assets and liabilities measured at fair value on a recurring basis

	Level 1 (1)		Level 2 (2)		Level 3 (3)		Total
	(in thousands)
January 31, 2016
Assets:
Available-for-sale securities	$	7,649	$	39,148	$	—	$	46,797
Liabilities:
Foreign exchange forwards	$	—	$	131	$	—	$	131
July 31, 2015
Assets:
Available-for-sale securities	$	6,505	$	33,782	$	—	$	40,287
Foreign exchange forwards		—		38		—		38
Total	$	6,505	$	33,820	$	—	$	40,325
Liabilities:
Foreign exchange forwards	$	—	$	39	$	—	$	39

(1) – quoted prices in active markets for identical assets or liabilities

(2) – observable inputs other than quoted prices in active markets for identical assets and liabilities

(3) – no observable pricing inputs in the market