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Debt (Scheduled maturities of long-term debt) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]      
2021 (remaining) $ 1,500    
2022 3,000    
2023 3,000    
2024 3,000    
2025 282,000    
Long-term Debt $ 292,500 $ 294,000 $ 420,500