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Summary of Significant Accounting Policies - Operating Lease Maturity (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Accounting Policies [Abstract]  
2020 $ 489,420
2021 466,210
2022 428,149
2023 381,164
2024 313,456
Thereafter 1,052,669
Total $ 3,131,068