Income Taxes - Unrecognized Tax Benefits (Details)	3 Months Ended
Mar. 31, 2013
United States [Member]
Income Tax Contingency [Line Items]
Tax years open for examination, by major tax jurisdiction	2007 and forward
The Netherlands [Member]
Income Tax Contingency [Line Items]
Tax years open for examination, by major tax jurisdiction	2011 and forward
Czech Republic [Member]
Income Tax Contingency [Line Items]
Tax years open for examination, by major tax jurisdiction	2010 and forward

Identification, by major jurisdiction, of tax years that remain open to examination under enacted tax laws.

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 48

-Paragraph 21

-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_OpenTaxYearsByMajorTaxJurisdiction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration