Schedule III--Real Estate and Accumulated Depreciation (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Carrying Value, Total	$ 2,956,761	$ 2,538,270	$ 1,849,939	$ 1,495,167
Acquisitions	323,373	633,687	318,619
Capital Expenditures	101,131	59,090	38,153
Disposal of Assets	(6,013)	(4,446)	(2,000)
Accumulated Depreciation	283,177	194,580	132,328	$ 77,938
Depreciation Expense	94,610	66,698	54,511
Disposal of Assets	$ (6,013)	$ (4,446)	$ (121)