Other Assets Equity Method Investee (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity Method Investment, Summarized Financial Information [Abstract]
Current Assets	$ 315,264	$ 325,527
Noncurrent Assets	2,246,809	1,929,182
Total Assets	2,562,073	2,254,709
Current Liabilities	585,887	513,842
Noncurrent Liabilities	1,231,262	958,988
Total Liabilities	1,817,149	1,472,830
Equity in noncontrolling interest	1,683	2,795
Total Revenue	990,172	797,441	$ 605,293
Total Expenses	(830,898)	(682,430)	(538,922)
Net Income (Loss)	$ 159,274	$ 115,011	$ 66,371