Condensed Consolidated Income Statements (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Sales Revenue, Goods, Net	$ 355,745	$ 349,067	$ 1,076,389	$ 1,070,504
Sales Revenue, Services, Net	168,532	160,537	496,563	471,780
Revenue	524,277	509,604	1,572,952	1,542,284
Cost of Goods Sold	192,256	182,179	569,143	555,078
Cost of Services	98,509	96,685	303,113	285,658
Cost of sales	290,765	278,864	872,256	840,736
Selling, general and administrative expenses	143,649	145,442	443,901	452,026
Research and development expenses	31,541	32,408	100,321	99,101
Restructuring and lease charges, net	1,126	9,672	23,713	21,034
Operating income from continuing operations	57,196	43,218	132,761	129,387
Interest and other expense, net	12,340	11,872	37,245	36,060
Income from continuing operations before income taxes	44,856	31,346	95,516	93,327
Provision for income taxes	4,557	2,357	(4,008)	8,694
Net income from continuing operations	40,299	28,989	99,524	84,633
Gain (Loss) on disposition of discontinued operations before income taxes	(64)	898	457	1,915
(Benefit from) provision for income taxes on discontinued operations and dispositions	37	293	(358)	752
Net income (loss) from discontinued operations and dispositions	(101)	605	815	1,163
Net income	$ 40,198	$ 29,594	$ 100,339	$ 85,796
Basic earnings (loss) per share:
Net income from continuing operations (per share)	$ 0.36	$ 0.25	$ 0.89	$ 0.75
Net income (loss) from discontinued operations and dispositions (per share)	$ 0.00	$ 0.01	$ 0.01	$ 0.01
Net Income (per share)	$ 0.36	$ 0.26	$ 0.89	$ 0.76
Diluted earnings (loss) per share:
Net income from continuing operations (per share)	$ 0.36	$ 0.25	$ 0.88	$ 0.74
Net income (loss) from discontinued operations and dispositions (per share)	$ 0.00	$ 0.01	$ 0.01	$ 0.01
Net income (per share)	$ 0.36	$ 0.26	$ 0.88	$ 0.75
Weighted average shares of common stock outstanding:
Basic (in shares)	111,827	113,860	112,285	113,491
Diluted (in shares)	113,115	114,998	113,516	114,565
Cash dividends per common share	$ 0.07	$ 0.07	$ 0.21	$ 0.21