Net Income Per Share - Schedule of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Numerator (basic and diluted):
Net income	$ 35,500	$ 18,680	$ 66,220	$ 35,394
Denominator:
Weighted average common shares outstanding, basic (in shares)	129,155	133,269	129,357	133,286
Dilutive effect of employee stock options, restricted stock units and performance stock units (in shares)	4,100	2,790	4,052	3,148
Dilutive effect of convertible notes (in shares)	1,500	0	548	0
Weighted average common shares outstanding, diluted (in shares)	134,755	136,059	133,957	136,434
Basic net income per share (in dollars per share)	$ 0.27	$ 0.14	$ 0.51	$ 0.27
Diluted net income per share (in dollars per share)	$ 0.26	$ 0.14	$ 0.49	$ 0.26