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Schedule of Principal Payments (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
2021 (remainder) $ 7,896  
2022 35,376  
2023 355,158  
2024 186,597  
2025 5,823  
2026 681,326  
Thereafter 378,014  
Total debt $ 1,650,190 $ 1,809,517