CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net revenue	$ 418,216	$ 311,552
Cost of goods sold	194,569	191,380
Gross profit	223,647	120,172
General and administrative	60,603	46,743
Selling and marketing	52,214	71,134
Research and development	42,269	33,900
Business reorganization	10,599	0
Depreciation and amortization	7,743	7,378
Total operating expenses	173,428	159,155
Income (loss) from operations	50,219	(38,983)
Interest and other, net	(2,808)	(4,506)
Gain on long-term investments, net	0	1,350
Income (loss) before income taxes	47,411	(42,139)
Benefit from income taxes	12,865	3,572
Net income (loss)	$ 60,276	$ (38,567)
Earnings (loss) per share:
Basic earnings (loss) per share (in dollars per share)	$ 0.57	$ (0.46)
Diluted earnings (loss) per share (in dollars per share)	$ 0.56	$ (0.46)