Basis of Presentation and Significant Accounting Policies - Schedule of Interest Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accounting Policies [Abstract]
Interest incurred	$ 20,558	$ 18,611	$ 40,819	$ 36,644
Less: Interest capitalized	20,558	18,611	40,819	36,644
Interest expense, net of amounts capitalized	0	0	0	0
Cash paid for interest	$ 24,767	$ 23,325	$ 39,678	$ 35,025