CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net sales	$ 470,320	$ 482,203
Cost of goods sold	298,591	300,450
Gross profit	171,729	181,753
Operating expenses:
Marketing and selling	87,427	91,045
Research and development	33,833	31,316
General and administrative	30,504	36,680
Restructuring charges, net	12,995	0
Total operating expenses	164,759	159,041
Operating income	6,970	22,712
Interest income, net	264	258
Other expense, net	(1,121)	(198)
Income before income taxes	6,113	22,772
Provision for (benefit from) income taxes	(1,324)	3,096
Net income	$ 7,437	$ 19,676
Net income per share:
Basic (in dollars per share)	$ 0.05	$ 0.12
Diluted (in dollars per share)	$ 0.04	$ 0.12
Shares used to compute net income per share :
Basic (in shares)	164,431	163,012
Diluted (in shares)	166,895	165,833