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Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Foreign currency translation adjustments: |  |  |  |
Change in unrealized foreign currency translation gains (losses) before income taxes | $ (8,388) | $ 4,736 | $ 12,576 | $ (8,536)
Change in unrealized foreign currency translation gains (losses), net of income taxes | (8,388) | 4,736 | 12,576 | (8,536)
Unrealized gain (losses) on available-for-sale securities: |  |  |  |
Change in unrealized holding gains (losses) arising during period before income taxes | 41,133 | 106,493 | 87,852 | 84,890
Income tax expense (benefit) on unrealized holding gains (losses) arising during period | 8,736 | 22,769 | 18,541 | 18,053
Change in unrealized holding gains (losses) on available-for-sale securities arising during period, net of income taxes | 32,397 | 83,724 | 69,311 | 66,837
Reclassification from accumulated OCI to net income for (gains) losses realized on available-for-sale securities | 696 | 142 | 2,341 | (429)
Income tax (expense) benefit on (gains) losses reclassified from accumulated OCI to net income | 146 | 30 | 492 | (90)
Reclassification from accumulated OCI to net income for (gains) losses realized on available-for-sale securities, net of income taxes | 550 | 112 | 1,849 | (339)
Change in unrealized gains (losses) on available-for-sale securities, net of income taxes and reclassification adjustment | 32,947 | 83,836 | 71,160 | 66,498
Effect of change in discount rate assumptions on the LFPB: |  |  |  |
Change in effect in discount rate assumptions on the LFPB before income taxes | (107,417) | (346,794) | (170,463) | (40,910)
Income tax expense (benefit) on the effect of change in discount rate assumptions on the LFPB from accumulated OCI to net income | (22,483) | (74,112) | (35,322) | (8,755)
Change in effect in discount rate assumptions on the LFPB, net of income taxes | $ (84,934) | $ (272,682) | $ (135,141) | $ (32,155)

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