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Segment Reporting - Narrative (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
segment
Sep. 30, 2020
USD ($)
Segment Reporting Information [Line Items]          
Number of reportable segments | segment       2  
Impairment charges $ 0 $ 2,103   $ 0 $ 6,204
Real Estate          
Segment Reporting Information [Line Items]          
Impairment charges   $ 2,100 $ 4,100   $ 6,200