Business Segments and Geographic Information (Details) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010	Dec. 31, 2010	Dec. 31, 2009
Key Segment Reporting Measurements
Revenue	$ 240,127	$ 188,954	$ 589,131	$ 505,996
Operating income/(loss)	(30,912)	(33,307)	(3,027)	6,081
Income/(loss) before income taxes	(29,745)	(33,032)	(236)	6,157
Total assets	870,019	766,565	870,019	766,565	892,359
Goodwill	38,958	38,958	38,958	38,958	38,958	44,353
North America [Member]
Key Segment Reporting Measurements
Revenue	106,134	91,995	238,117	213,853
Operating income/(loss)	8,131	2,921	29,417	24,563
Income/(loss) before income taxes	8,131	2,921	29,417	24,563
Total assets	250,244	211,059	250,244	211,059
Goodwill	31,964	31,964	31,964	31,964	31,964	36,876
Europe [Member]
Key Segment Reporting Measurements
Revenue	91,713	66,750	257,418	218,380
Operating income/(loss)	(6,198)	(11,812)	22,684	25,456
Income/(loss) before income taxes	(6,198)	(11,812)	22,684	25,456
Total assets	340,345	323,512	340,345	323,512
Goodwill	6,994	6,994	6,994	6,994	6,994	7,477
Asia [Member]
Key Segment Reporting Measurements
Revenue	42,280	30,209	93,596	73,763
Operating income/(loss)	1,523	2,630	9,769	9,477
Income/(loss) before income taxes	1,523	2,630	9,769	9,477
Total assets	78,612	49,459	78,612	49,459
Goodwill		0		0
Unallocated Corporate [Member]
Key Segment Reporting Measurements
Operating income/(loss)	(34,368)	(27,046)	(64,897)	(53,415)
Income/(loss) before income taxes	(33,201)	(26,771)	(62,106)	(53,339)
Total assets	200,818	182,535	200,818	182,535
Goodwill		$ 0		$ 0

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References+ Details

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details