Fair Value Measures - Schedule of assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets:
Derivative assets	$ 250	$ 544
Derivative liabilities	(28,081)	0
Fair Value, Recurring [Member]
Assets:
Derivative assets	250	544
Investment in Cole REITs	7,552	7,844
Total assets	7,802	8,388
Derivative liabilities	(28,081)
Fair Value, Recurring [Member] \| Level 1 [Member]
Assets:
Derivative assets	0	0
Investment in Cole REITs	0	0
Total assets	0	0
Derivative liabilities	0
Fair Value, Recurring [Member] \| Level 2 [Member]
Assets:
Derivative assets	250	544
Investment in Cole REITs	0	0
Total assets	250	544
Derivative liabilities	(28,081)
Fair Value, Recurring [Member] \| Level 3 [Member]
Assets:
Derivative assets	0	0
Investment in Cole REITs	7,552	7,844
Total assets	7,552	$ 7,844
Derivative liabilities	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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