Debt (Tables)

9 Months Ended

Apr. 30, 2016

Net Carrying Value of the Notes

	April 30,			July 31,
	2016			2015
	(In thousands)
Carrying amount of equity component (net of allocated debt issuance costs)	$	27,143		$	27,163
Principal amount of Notes	$	99,500		$	100,000
Unamortized debt discount		(18,272	)		(22,136	)
Net carrying amount	$	81,228		$	77,864

Summary of Interest Expense Related to Convertible Notes

	Three Months Ended				Nine Months Ended
	April 30,				April 30,
	2016		2015		2016		2015
	(In thousands)
Interest expense related to contractual interest coupon	$	1,322	$	1,313	$	3,968	$	3,939
Interest expense related to accretion of the discount		1,391		1,136		3,864		3,305
Interest expense related to debt issuance costs		123		100		342		288
	$	2,836	$	2,549	$	8,174	$	7,532