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Indebtedness - New Senior Notes - Additional Information (Detail) - USD ($) $ in Thousands |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 02, 2021 | Jan. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |  |
Unamortized debt issuance costs |  |  | $ 35,114 | $ 30,625
Maximum redemption price of notes as percentage of principal amount | 100.00% |  |  |
8.25% Senior Notes Due 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate principal amount |  | $ 600,000 |  |
Interest rate on notes |  | 8.25% | 8.25% | 8.25%
Debt instrument maturity year |  | 2029 |  |
Net proceeds after underwriting expenses |  | $ 590,800 |  |
Unamortized debt issuance costs |  | $ 9,200 |  |
Maximum redemption price of notes as percentage of principal amount |  |  | 100.00% |

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