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Credit Facilities - Maturity of Credit Facilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]    
2020 $ 624,043  
2021 189,573  
2022 713,952  
2023 249,240  
2024 359,898  
Thereafter 1,289,393  
Total debt $ 3,426,099 $ 3,143,280