Investments (Other Long Term Investments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Long-Term Investments	$ 60,585	$ 175,661
Joint Ventures And Limited Partnerships [Member]
Other Long-Term Investments	60,585	43,925
Derivative [Member]
Other Long-Term Investments	$ 0	$ 131,736