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Real Estate Dispositions, Held for Sale, and Impairment Charges - Components of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
ASSETS HELD FOR SALE |  |
TOTAL ASSETS HELD FOR SALE | $ 9,562 | $ 1,077
LIABILITIES HELD FOR SALE |  |
TOTAL LIABILITIES HELD FOR SALE | 1,041 | 868
Real Estate Held For Sale [Member] |  |
ASSETS HELD FOR SALE |  |
Real estate, at cost | 11,454 | 1,899
Less: accumulated depreciation | 2,668 | 846
Total real estate held for sale, net | 8,786 | 1,053
Lease intangibles, net | 200 | 0
Deferred rent receivable, net | 575 | 0
Other assets | 1 | 24
TOTAL ASSETS HELD FOR SALE | 9,562 | 1,077
LIABILITIES HELD FOR SALE |  |
Deferred rent liability, net | 755 | 0
Asset retirement obligation | 286 | 75
Accounts payable and accrued expenses | 0 | 1
Other liabilities | 0 | 792
TOTAL LIABILITIES HELD FOR SALE | $ 1,041 | $ 868

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