0.5% Convertible Senior Notes and Capped Call (Tables)

3 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Summary of Convertible Debt

The net carrying amount of the liability component of the Notes was as follows (in thousands):

	June 30, 2020		March 31, 2020
Principal	$	500,250	$	500,250
Unamortized debt discount	(61,864)		(66,894)
Unamortized issuance costs	(5,876)		(6,312)
Net carrying amount	$	432,510	$	427,044

Summary of Interest Expense

Interest expense related to the Notes was as follows (in thousands):

	Three Months Ended June 30,
	2020		2019
Amortization of debt discount	$	5,030	$	4,776
Amortization of issuance costs	436		389
Contractual interest expense	625		625
Total interest expense	$	6,091	$	5,790