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Schedule II - Valuation and Qualifying Accounts (Detail) - Valuation Allowances for Deferred Tax Assets [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Valuation And Qualifying Accounts Disclosure [Line Items]    
Balance at Beginning of Year $ 426,355 $ 359,518
Charged (Credited) to Statement of Operation 26,385 66,837
Charged to Other Accounts - Liabilities and Equity 0 0
Deductions, Net 0 0
Balance at End of Year $ 452,740 $ 426,355