Income Taxes (Changes in Valuation Allowance) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 77,629	$ 76,452	$ 72,327
Charge (benefit) to provision for income taxes	(9,302)	(1,805)	(2,313)
Charge (benefit) to other comprehensive income	(22,279)	2,982	6,438
Ending balance	$ 46,048	$ 77,629	$ 76,452

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant