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Supplemental Disclosures (Narrative) (Details) (USD $)
3 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Feb. 18, 2014
ARN [Member]
Dec. 31, 2013
ARN [Member]
Mar. 31, 2014
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% 50.00%  
Impairment of equity method investment       $ 95,400,000    
Loss on sale of equity method investment     2,400,000     11,500,000
Date of sale of equity method investment         February 18, 2014  
Reclassification of AOCI due to the sale of equity method investment 3,309,000 (998,000)        
Supplemental Disclosures [Abstract]            
Effective tax rate (18.80%) 31.50%        
Income tax refunds $ 3,500,000 $ 400,000