Supplemental Disclosures (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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	100.00%		100.00%		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	0.40%	36.50%	(12.60%)	31.00%
Income tax refunds			$ 4,500,000	$ 1,300,000