Net total Increase or Decrease in the accrual for restructuring costs during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 146

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_RestructuringReservePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

Commitments, Contingencies And Other (Narrative) (Details) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended
	Aug. 31, 2010	Mar. 31, 2012 EUR (€)	Apr. 02, 2011 USD ($)	Dec. 31, 2008 EUR (€)	Apr. 02, 2011 Cost Of Sales [Member] USD ($)	Apr. 02, 2011 Selling, General And Administrative [Member] USD ($)
Commitments And Contingencies [Line Items]
Defendant number in filed cases	7
Total number of cases filed	43
Assessment received from Belgian tax authority				€ 24,000
Interest on assessment		2,500
Interest rate on assessment		7.00%
Pre-tax business restructuring charges			$ 6,813		$ 6,347	$ 466