Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Rental revenues	$ 43,499	$ 57,760	$ 143,087	$ 170,470
Customer Concentration Risk \| Revenue \| Bloomberg
Disaggregation of Revenue [Line Items]
Rental revenues			$ 80,696	$ 81,314
Percentage rent contributed by tenant			56.00%	48.00%

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details