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Supplemental Disclosures (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Feb. 18, 2014
ARN [Member]
Dec. 31, 2013
ARN [Member]
Feb. 18, 2014
ARN [Member]
Realized Foreign Exchange Gain Loss on Sale [Member]
Equity Method Investments [Line Items]              
Percentage of ownership         50.00%    
Impairment of equity method investment           $ 95,400,000  
Loss on sale of equity method investment         2,400,000    
Date of sale of equity method investment         February 18, 2014    
Reclassification of AOCI due to the sale of equity method investment 0 0 0 (998,000)     11,500,000
Supplemental Disclosures [Abstract]              
Effective tax rate 29.20% 44.50% (14.90%) 36.10%      
Income tax refunds     $ 6,000,000 $ 1,400,000