Restructuring (Details) (USD $)	3 Months Ended			12 Months Ended
	Apr. 01, 2012		Apr. 03, 2011	Jan. 01, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,046,000		$ 0	$ 21,403,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	6,324,000
Charges	3,046,000
Payments	(6,080,000)
Restructuring liability, end of period	3,290,000			6,324,000
December 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated, Percent of Workforce	2.00%
Restructuring and Related Cost, Cost Incurred to Date	10,400,000
Restructuring Reserve [Roll Forward]
Restructuring liability, end of period	2,000,000
December 2011 Restructuring Plan [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Percentage of Costs to be Settled With Cash				80.00%
December 2011 Restructuring Plan [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				17,000,000
December 2011 Restructuring Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	8,300,000
Restructuring charges	1,000,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	3,344,000
Charges	1,044,000
Payments	(4,243,000)
Restructuring liability, end of period	145,000
December 2011 Restructuring Plan [Member] | Other Restructuring Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	300,000
Restructuring charges	100,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	24,000	[1]
Charges	120,000	[1]
Payments	(52,000)	[1]
Restructuring liability, end of period	92,000	[1]
December 2011 Restructuring Plan [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	1,800,000
Restructuring charges	1,800,000
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	0
Charges	1,760,000
Payments	0
Restructuring liability, end of period	1,760,000
June 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Initiation Date				Jun. 13, 2011
Restructuring and Related Cost, Number of Positions Eliminated, Percent of Workforce	2.00%
June 2011 Restructuring Plan [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	14,000,000
Restructuring Reserve [Roll Forward]
Restructuring liability, end of period	1,300,000
June 2011 Restructuring Plan [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	2,204,000	[2]
Charges	(100,000)	[2]
Payments	(1,759,000)	[2]
Restructuring liability, end of period	345,000	[2]
June 2011 Restructuring Plan [Member] | Employee Severance [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	11,100,000
June 2011 Restructuring Plan [Member] | Other Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	64,000	[2]
Charges	212,000	[1]
Payments	(26,000)	[1]
Restructuring liability, end of period	250,000	[1]
June 2011 Restructuring Plan [Member] | Other Restructuring Costs [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	2,300,000
Restructuring charges	100,000
June 2011 Restructuring Plan [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	688,000
Charges	10,000
Payments	0
Restructuring liability, end of period	698,000
June 2011 Restructuring Plan [Member] | Facility Closing [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	700,000
June 2011 Restructuring Plan [Member] | Accelerated Vesting of Promissory Notes [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 1,400,000

[1] Other costs primarily represent associated legal services.

[2] The June 2011 Plan reserve balance as of January 1, 2012 excludes $1.4 million of charges associated with the accelerated vesting of promissory notes, in accordance with the terms of each agreement, previously issued as consideration for an acquisition completed in the first quarter of fiscal 2010. The $1.4 million charge is separately recorded in "Accrued liabilities" on the Company's Condensed Consolidated Balance Sheet as of January 1, 2012, and was fully paid during the three months ended April 1, 2012.