Amount classified as assets attributable to disposal group held for sale or disposed of.

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Discontinued Operations - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Feb. 01, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets related to real estate assets held for sale and discontinued operations, net	$ 24,349		$ 163,999
Cole Capital [Member] \| Held-for-sale of Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration paid at closing		$ 120,000
Contingent consideration, payment period	6 years
Contingent consideration, maximum consideration receivable	$ 80,000
Assets related to real estate assets held for sale and discontinued operations, net			$ 125,700