Fair Value Measures - Schedule of assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets:
Derivative assets	$ 0	$ 250
Liabilities:
Derivative liabilities	(106,520)	(28,081)
Fair Value, Recurring [Member]
Assets:
Derivative assets		250
Investment in Cole REITs	6,867	7,552
Total assets		7,802
Liabilities:
Derivative liabilities	(106,520)	(28,081)
Fair Value, Recurring [Member] \| Level 1 [Member]
Assets:
Derivative assets		0
Investment in Cole REITs	0	0
Total assets		0
Liabilities:
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Level 2 [Member]
Assets:
Derivative assets		250
Investment in Cole REITs	0	0
Total assets		250
Liabilities:
Derivative liabilities	(106,520)	(28,081)
Fair Value, Recurring [Member] \| Level 3 [Member]
Assets:
Derivative assets		0
Investment in Cole REITs	6,867	7,552
Total assets		7,552
Liabilities:
Derivative liabilities	$ 0	$ 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 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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