Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 29, 2014		Jun. 30, 2013		Jun. 29, 2014		Jun. 30, 2013
Net revenues:
Products	$ 452,488		$ 363,087		$ 707,874		$ 577,387
Services	73,079		65,802		138,703		131,869
Total net revenues	525,567		428,889		846,577		709,256
Cost of revenues:
Cost of products	202,411		158,411		326,859		255,204
Cost of services	32,743		29,245		62,258		59,402
Total cost of revenues	235,154		187,656		389,117		314,606
Gross profit	290,413		241,233		457,460		394,650
Operating expenses:
Engineering and development	73,414		67,773		140,499		130,524
Selling and administrative	77,489		69,230		155,492		137,120
Acquired intangible assets amortization	18,271		18,063		36,542		36,099
Restructuring and other	572		259		572		591
Total operating expenses	169,746		155,325		333,105		304,334
Income from operations	120,667		85,908		124,355		90,316
Interest income	1,266		903		2,302		1,975
Interest expense and other	541		6,454		7,138		13,360
Income before income taxes	121,392	[1],[2]	80,357	[1],[2]	119,519	[1],[2]	78,931	[1],[2]
Income tax provision	20,187		13,801		17,385		5,786
Net income	$ 101,205		$ 66,556		$ 102,134		$ 73,145
Net income per common share:
Basic	$ 0.52		$ 0.35		$ 0.53		$ 0.38
Diluted	$ 0.47		$ 0.28		$ 0.45		$ 0.31
Weighted average common shares-basic	194,408		190,569		193,860		190,128
Weighted average common shares-diluted	216,568		234,909		226,526		234,833
Cash dividend declared per common share					$ 0.06

[1] Pension and postretirement actuarial gains and losses, interest income, and interest expense and other are included in Corporate and Eliminations.

[2] Included in the income (loss) before income taxes for each of the segments are charges and credits for the three and six months ended June 29, 2014 and June 30, 2013 that include restructuring and other, and provision for excess and obsolete inventory, as follows: