Segment Reporting Schedule of Revenue from External Customers by Geographical Regions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012		Jul. 01, 2012		Apr. 01, 2012		Dec. 31, 2011		Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 216,600	$ 192,800	[1]	$ 201,000	[1]	$ 179,700	[2]	$ 236,800	[3]	$ 211,800	$ 221,100	$ 178,500	$ 790,093	$ 848,181	$ 679,111
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													399,708	408,307	344,100
Europe, Middle East and Africa (EMEA)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													231,030	275,365	212,998
Latin America and Mexico (LATAM)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													101,075	102,587	76,205
Asia Pacific (ASIAPAC)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues													$ 58,280	$ 61,922	$ 45,808

[1] Net (loss) earnings, basic (loss) earnings per share, and diluted (loss) earnings per share for the second and third quarters of 2012 have been corrected from amounts previously reported, as described in the section below titled "Immaterial Restatement of Goodwill Impairment."2011Q1 Q2 Q3 Q43Revenues$178.5 $221.1 $211.8 $236.8Gross profit68.3 91.3 87.8 99.3Net (loss) earnings(6.0) (3.8) 0.7 (21.6) Basic (loss) earnings per share$(0.10) $(0.06) $0.01 $(0.36)Diluted (loss) earnings per share$(0.10) $(0.06) $0.01 $(0.36)3 In the fourth quarter of 2011, we recorded an expense of $20.9 million for a valuation allowance against a portion of our U.S. deferred tax assets.

[2] In the first quarter of 2012, we recognized expense of $206.9 million for a valuation allowance against a portion of our U.S. deferred tax assets.

[3] In the fourth quarter of 2011, we recorded an expense of $20.9 million for a valuation allowance against a portion of our U.S. deferred tax assets.