Supplemental Guarantor Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Condensed Consolidated Cash Flow Statements [Abstract]
Net cash provided by (used for) operating activities	$ 12,748	$ (15,627)
Cash flows from investing activities:
Cash used to acquire businesses, net of cash acquired	(587)	(23,192)
Capital expenditures	(7,557)	(6,798)
Proceeds from disposal of tangible assets		1,136
Net cash used for investing activities	(8,144)	(28,854)
Cash flows from financing activities:
Payments under share repurchase program	(25,000)
Cash dividends paid	(2,409)	(2,392)
Payments under borrowing arrangements	(600)
Tax benefit related to share-based compensation	4,119	1,668
Proceeds from exercise of stock options	2,179	3,952
Net cash provided by (used for) financing activities	(21,711)	3,228
Effect of currency exchange rate changes on cash and cash equivalents	4,408	5,685
Increase (decrease) in cash and cash equivalents	(12,699)	(35,568)
Cash and cash equivalents, beginning of period	382,716	358,653
Cash and cash equivalents, end of period	370,017	323,085
Issuer [Member]
Condensed Consolidated Cash Flow Statements [Abstract]
Net cash provided by (used for) operating activities	(11,907)	(21,326)
Cash flows from investing activities:
Cash used to acquire businesses, net of cash acquired	(587)	(23,192)
Capital expenditures	(4,927)	(4,164)
Proceeds from disposal of tangible assets		1,118
Net cash used for investing activities	(5,514)	(26,238)
Cash flows from financing activities:
Payments under share repurchase program	(25,000)
Cash dividends paid	(2,409)	(2,392)
Payments under borrowing arrangements	(600)
Tax benefit related to share-based compensation	4,119	1,668
Proceeds from exercise of stock options	2,179	3,952
Intercompany capital contributions and dividends		(27,546)
Net cash provided by (used for) financing activities	(21,711)	(24,318)
Increase (decrease) in cash and cash equivalents	(39,132)	(71,882)
Cash and cash equivalents, beginning of period	92,586	173,699
Cash and cash equivalents, end of period	53,454	101,817
Non-Guarantor Subsidiaries [Member]
Condensed Consolidated Cash Flow Statements [Abstract]
Net cash provided by (used for) operating activities	24,655	5,699
Cash flows from investing activities:
Capital expenditures	(2,630)	(2,634)
Proceeds from disposal of tangible assets		18
Net cash used for investing activities	(2,630)	(2,616)
Cash flows from financing activities:
Intercompany capital contributions and dividends		27,546
Net cash provided by (used for) financing activities		27,546
Effect of currency exchange rate changes on cash and cash equivalents	4,408	5,685
Increase (decrease) in cash and cash equivalents	26,433	36,314
Cash and cash equivalents, beginning of period	290,130	184,954
Cash and cash equivalents, end of period	$ 316,563	$ 221,268