Schedule III Changes in Accumulated Depreciation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of year	$ 205,712	$ 45,050	$ 12,062
Additions:
Depreciation expense	628,340	160,662	32,988
Deductions:
Dispositions	(49,377)	0	0
Impairments	(9,625)	0	0
Balance, end of year	$ 775,050	$ 205,712	$ 45,050