Equity Investments (Equity Investment Income Statement Disclosure) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]
Gross revenue	$ 430,729	$ 390,620	$ 162,401
Net (income) loss	$ (16,761)	$ 140,796	$ 17,350