Real Estate and Accumulated Depreciation Schedule III - Summary of Activity for Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate:
Balance at beginning of period	$ 265,879	$ 329,643	$ 308,808
Acquisitions	0	0	57,899
Improvements	2,190	2,044	4,477
Disposals/written-off	0	(77)	(19)
Reclassification	(105)	(390)	(689)
Establishment of new basis for impaired asset	0	(4,149)	0
Cost of real estate sold	(57,992)	(61,192)	(40,833)
Balance at end of the period	209,972	265,879	329,643
Accumulated depreciation:
Balance at beginning of period	29,108	27,569	23,779
Depreciation expense	8,759	11,109	11,077
Disposals/written-off	(2,964)	(6,838)	(7,287)
Accumulated depreciation on impaired asset	0	(2,732)	0
Balance at end of the period	34,903	29,108	27,569
Impairment charge	0	1,417	0
Foreign currency translation loss		1,600	3,000
Reclassification from improvements to furniture, fixtures and equipment	$ 100	$ 400	$ 700