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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ References

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Dispositions (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
Dispositions (Details) - USD ($) $ in Thousands	Jan. 17, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments on credit facility				$ 21,304	$ 15,648
Gain on sale of assets		$ 0	$ (161)	$ 0	1,952
Circle C ground lease \| Disposal by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale, consideration	$ 3,200
Gain on sale of assets					$ (2,000)
Revolving Credit Facility \| Comerica Credit Facility \| Line of credit
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments on credit facility	$ 2,500