Properties (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Properties
(Loss) gain on sale of investments and other assets, net		$ (90)	$ 209	$ 155	$ 17,407
Summary of properties
Total properties, at cost		1,256,997		1,256,997		$ 928,060
Less: accumulated depreciation		(24,142)		(24,142)		(8,835)
Properties, net		1,232,855		1,232,855		919,225
Property Segment
Summary of properties
Land		324,616		324,616		247,589
Buildings		686,214		686,214		516,117
Furniture & fixtures		21,607		$ 21,607		11,980
Property Segment | Minimum
Summary of properties
Building, useful life				10 years
Land improvements, useful life				0 years
Furniture & fixtures, useful life				2 years
Property Segment | Maximum
Summary of properties
Building, useful life				40 years
Land improvements, useful life				10 years
Furniture & fixtures, useful life				7 years
Investment and Servicing Segment
Properties
(Loss) gain on sale of investments and other assets, net	$ 17,100
Summary of properties
Land		67,187		$ 67,187		39,103
Buildings		156,146		156,146		112,524
Furniture & fixtures		$ 1,227		$ 1,227		$ 747
Investment and Servicing Segment | Minimum
Summary of properties
Building, useful life				10 years
Building improvements, useful life				0 years
Furniture & fixtures, useful life				3 years
Investment and Servicing Segment | Maximum
Summary of properties
Building, useful life				40 years
Building improvements, useful life				10 years
Furniture & fixtures, useful life				7 years