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Leases Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Real estate revenue $ 22,120,000 $ 21,519,000 $ 66,054,000 $ 64,824,000
Variable lease payments $ 5,013,000 $ 4,592,000 $ 14,817,000 $ 13,861,000