Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of investments classified as other.

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Related Party Transactions and Arrangements - Investment in the Cole REITs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Equity in income (loss) and gain on disposition of unconsolidated entities	$ 1,065	$ (82)
Aggregate equity investments	7,844		$ 3,264
Net loss	(364)	82
Cole REITs [Member]
Related Party Transaction [Line Items]
Net loss		$ 400
Cole REITs [Member]
Related Party Transaction [Line Items]
Equity in income (loss) and gain on disposition of unconsolidated entities	600
Aggregate equity investments	7,800		$ 3,300
Cole Real Estate Investments, Inc. [Member]
Related Party Transaction [Line Items]
Gain included in other income, net	$ 5,102