Schedule III-Residential Real Estate - Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate activity
Beginning balance	$ 928,060	$ 40,497	$ 754,981
Additions during the year:
Acquisitions (1)	1,048,985	900,247	96,901
Acquisitions through foreclosure	7,248	12,548	7,897
Improvements	15,766	2,056	1,872
Total additions	1,071,999	914,851	106,670
Deductions during the year:
Spin-off of SWAY			(819,239)
Costs of real estate sold		(18,421)	(1,915)
Foreign currency translation	(13,774)	(8,867)
Total deductions	(13,774)	(27,288)	(821,154)
Ending balance	1,986,285	928,060	40,497
Accumulated depreciation activity
Beginning balance	8,835	643	5,767
Depreciation expense	33,350	8,802	2,183
Spin-off of SWAY			(7,221)
Dispositions/write-offs		(539)	(86)
Foreign currency translation	(620)	(71)
Ending balance	$ 41,565	$ 8,835	$ 643