Dispositions and Impairment - Schedule of Properties Held for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Liabilities:
Liabilities held for sale	$ 5,297	$ 386
Disposal Group, Held-for-sale, Not Discontinued Operations
Assets:
Real estate, at cost	108,763	63,639
Real estate, intangible assets	16,641	14,498
Accumulated depreciation and amortization	(76,423)	(16,873)
Rent receivable - deferred	2,486	2,439
Other	6,564	165
Assets held for sale	58,031	63,868
Liabilities:
Accounts payable and other liabilities	4,741	42
Prepaid rent	556	344
Liabilities held for sale	$ 5,297	$ 386

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