Indebtedness - Early Redemption of Senior and Senior Subordinated Notes (Detail) $ in Thousands	Mar. 31, 2021 USD ($)
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Outstanding Principal Amount	$ 25,496
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Outstanding Principal Amount	490
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Outstanding Principal Amount	19,896
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Outstanding Principal Amount	9,730
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Outstanding Principal Amount	$ 7,712