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Segment Information (Schedule Of Income Or Loss From Operations By Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Income (loss) from operations	$ 9,517	$ 17,519
Subtotal [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	9,635	18,013
Inter-Segment Elimination [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(118)	(494)
United States [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(2,030)	11,269
Germany [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	197	661
Other Europe [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	2,401	1,766
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	$ 9,067	$ 4,317

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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