Condensed Consolidated Income Statements (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Sales Revenue, Goods, Net	$ 357,194	$ 306,126
Sales Revenue, Services, Net	153,696	141,052
Revenue	510,890	447,178
Cost of Goods Sold	186,457	157,252
Cost of Services	92,419	89,615
Cost of sales	278,876	246,867
Selling, general and administrative expenses	156,849	132,695
Research and development expenses	32,624	26,185
Restructuring and lease charges, net	6,159	0
Operating income from continuing operations	36,382	41,431
Interest and other expense, net	12,830	5,756
Income from continuing operations before income taxes	23,552	35,675
Provision for income taxes	1,476	8,384
Net income from continuing operations	22,076	27,291
Gain (Loss) on disposition of discontinued operations before income taxes	535	(1,584)
(Benefit from) provision for income taxes on discontinued operations and dispositions	42	794
Net income (loss) from discontinued operations and dispositions	493	(2,378)
Net income	$ 22,569	$ 24,913
Basic earnings (loss) per share:
Net income from continuing operations (per share)	$ 0.20	$ 0.24
Net income (loss) from discontinued operations and dispositions (per share)	$ 0.00	$ (0.02)
Net Income (per share)	$ 0.20	$ 0.22
Diluted earnings (loss) per share:
Net income from continuing operations (per share)	$ 0.19	$ 0.24
Net income (loss) from discontinued operations and dispositions (per share)	$ 0.00	$ (0.02)
Net income (per share)	$ 0.20	$ 0.22
Weighted average shares of common stock outstanding:
Basic (in shares)	113,097	113,998
Diluted (in shares)	114,119	115,140
Cash dividends per common share	$ 0.07	$ 0.07