CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Net revenue	$ 387,982	$ 418,216
Cost of goods sold	131,365	194,569
Gross profit	256,617	223,647
General and administrative	67,735	60,603
Selling and marketing	58,306	52,214
Research and development	50,712	42,269
Depreciation and amortization	9,260	7,743
Business reorganization	(242)	10,599
Total operating expenses	185,771	173,428
Income from operations	70,846	50,219
Interest and other, net	6,601	(2,808)
Income before income taxes	77,447	47,411
Provision for (benefit from) income taxes	5,754	(12,865)
Net income	$ 71,693	$ 60,276	[1]
Earnings per share:
Basic earnings (loss) per share (in dollars per share)	$ 0.63	$ 0.57
Diluted earnings (loss) per share (in dollars per share)	$ 0.62	$ 0.56

[1] Prior period amounts have been adjusted retrospectively to reflect the adoption of ASU 2016-08, Statement of Cash Flows (Topic 230): Restricted Cash. Refer to Note 1 for further discussion.