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Future Minimum Rents and Lease Payments - Rental Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Leases [Abstract]        
Contingent rental expense $ 2,100 $ 2,977 $ 4,256 $ 5,491
Minimum rental expense $ 4,991 $ 4,606 $ 9,982 $ 9,209