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Fair Value Measurement (Schedule of Reconciliation of Fair Value Measurements of Assets and Liabilities Utilizing Level 3 Inputs) (Details)) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Reconciliation of Fair Value Measurements of Assets and Liabilities Utilizing Level 3 Inputs [Roll Forward] | ||
| Fair value as of January 1 | $ 29,025us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue | |
| Cash settlements | (10,795)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements | |
| Additions | 43,576us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases | 28,271us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases |
| Change in fair value recognized in earnings | (26,150)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 | 754us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 |
| Fair value as of December 31 | $ 35,656us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue | $ 29,025us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue |
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- Definition
Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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