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Income Taxes - Components of Current and Deferred (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Foreign [Line Items]      
Current foreign tax expense $ 46,441,000 $ 47,332,000 $ 6,758,000
Deferred foreign tax expense 8,023,000 23,475,000 43,599,000
Total foreign income taxes 54,464,000 70,807,000 50,357,000
Income (loss) before income taxes 528,553,000 817,729,000 580,597,000
BERMUDA      
Foreign [Line Items]      
Current foreign tax expense 0 0 0
Deferred foreign tax expense 0 0 0
Income (loss) before income taxes 325,453,000 532,391,000 346,023,000
UNITED STATES      
Foreign [Line Items]      
Current Income Tax Expense (Benefit) 45,861,000 46,380,000 6,528,000
Deferred Federal Income Tax Expense (Benefit) 8,010,000 23,522,000 43,604,000
Income (loss) before income taxes 201,960,000 284,468,000 233,518,000
Foreign      
Foreign [Line Items]      
Current foreign tax expense 580,000 952,000 230,000
Deferred foreign tax expense 13,000 (47,000) (5,000)
Income (loss) before income taxes $ 1,140,000 $ 870,000 $ 1,056,000