Property Dispositions and Real Estate Impairment - Schedule of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Real estate, at cost	$ 6,011	$ 25,957
Real estate, intangible assets	5,589	7,789
Accumulated depreciation and amortization	(2,319)	(13,346)
Rent receivable - deferred	799	1,715
Other assets	0	1,693
Assets held for sale	10,080	23,808
Liabilities:
Other	48	191
Liabilities held for sale	$ 48	$ 191