CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenue	$ 379,472	$ 344,517
Cost of goods sold	201,782	168,620
Gross profit	177,690	175,897
Operating expenses:
Research and development	36,411	34,774
Selling, general and administrative	83,902	75,369
Total operating expenses	120,313	110,143
Earnings from operations	57,377	65,754
Interest expense	3,447	3,661
Interest income	(260)	(247)
Other income, net	(1,430)	(700)
Earnings before income taxes	55,620	63,040
Income tax provision	54,495	15,130
Net earnings	$ 1,125	$ 47,910
Earnings per share:
Basic	$ 0.01	$ 0.34
Diluted	$ 0.01	$ 0.34
Weighted average shares outstanding:
Basic	137,496	139,768
Diluted	138,779	141,472