Other Financial Statement Disclosures (Components of Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Financial Statement Disclosures [Abstract]
Trade	$ 433,997	$ 323,679
Income tax	62,590	6,759
Other	13,607	14,108
Total receivables - trade and other	$ 510,194	$ 344,546