Fair Value Measurements (Tables)

3 Months Ended

Oct. 31, 2015

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)
October 31, 2015
Assets:
Available-for-sale securities	$	7,598	$	39,724	$	—	$	47,322
Foreign exchange forwards		—		144		—		144
Total	$	7,598	$	39,868	$	—	$	47,466
Liabilities:
Foreign exchange forwards	$	—	$	247	$	—	$	247
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