CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 04, 2015	Sep. 28, 2014	Oct. 04, 2015	Sep. 28, 2014
Revenues:
Products		$ 386,488	$ 402,987	$ 1,096,056	$ 1,110,861
Services		79,506	75,023	225,077	213,726
Total revenues		465,994	478,010	1,321,133	1,324,587
Cost of revenues:
Cost of products		170,963	182,591	471,450	509,450
Cost of services		36,405	34,298	100,067	96,556
Total cost of revenues (exclusive of acquired intangible assets amortization shown separately below)		207,368	216,889	571,517	606,006
Gross profit		258,626	261,121	749,616	718,581
Operating expenses:
Engineering and development		74,027	71,953	221,309	212,452
Selling and administrative		77,481	73,064	226,595	228,556
Acquired intangible assets amortization		20,053	18,271	49,119	54,813
Restructuring and other		261	(405)	(124)	167
Total operating expenses		171,822	162,883	496,899	495,988
Income from operations		86,804	98,238	252,717	222,593
Non-operating (income) expense:
Interest income		(1,708)	(1,922)	(5,198)	(4,224)
Interest expense		508	144	1,114	6,720
Other (income) expense, net		596	(654)	(5,180)	(92)
Income before income taxes	[1],[2]	87,408	100,670	261,981	220,189
Income tax provision		15,955	17,721	54,863	35,106
Net income		$ 71,453	$ 82,949	$ 207,118	$ 185,083
Net income per common share:
Basic		$ 0.34	$ 0.40	$ 0.97	$ 0.93
Diluted		$ 0.34	$ 0.38	$ 0.96	$ 0.83
Weighted average common shares-basic		210,032	207,381	213,688	198,367
Weighted average common shares-diluted		211,736	218,333	215,348	223,795
Cash dividend declared per common share		$ 0.06	$ 0.06	$ 0.18	$ 0.12

[1] Included in the income (loss) before income taxes for each of the segments are charges related to inventory and other.

[2] Interest income, interest expense, and other (income) expense, net are included in Corporate and Eliminations.