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Debt - Scheduled Principal Repayments - Additional Information (Details)
$ in Thousands
Mar. 31, 2021
USD ($)
Debt Instrument [Line Items]  
Contractual due 2021 $ 365,838
Contractual due 2022 535,612
Contractual due 2023 409,359
Debt With Extension Options  
Debt Instrument [Line Items]  
Contractual due 2021 260,500
Contractual due 2022 250,600
Contractual due 2023 $ 41,500