Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Rental revenues	$ 45,478	$ 55,932	$ 99,588	$ 112,710
Customer Concentration Risk \| Revenue \| Bloomberg
Disaggregation of Revenue [Line Items]
Rental revenues			$ 53,180	$ 53,676
Percentage rent contributed by tenant			53.00%	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