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Settlement Agreement (Details) (Other Income [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013
Gain Contingencies [Line Items]
Cash settlement payment	$ 0us-gaap_GainLossRelatedToLitigationSettlement	$ 0us-gaap_GainLossRelatedToLitigationSettlement	$ 43,429us-gaap_GainLossRelatedToLitigationSettlement	$ 0us-gaap_GainLossRelatedToLitigationSettlement
Positive Outcome of Litigation [Member]
Gain Contingencies [Line Items]
Cash settlement payment					$ 43,429us-gaap_GainLossRelatedToLitigationSettlement / us-gaap_GainContingenciesByNatureAxis = us-gaap_PositiveOutcomeOfLitigationMember / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherIncomeMember

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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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