Basis of Presentation and Summary of Significant Accounting Policies - Changes in the Balance of Each Component of Accumulated Other Comprehensive Earnings (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Changes in the balance of each component of accumulated other comprehensive earnings (loss) | ||||||
| Beginning balance | $ 1,604,212 | $ 1,521,967 | $ 1,520,752 | $ 1,413,514 | $ 1,521,967 | $ 1,413,514 |
| Other comprehensive earnings (loss) | 18,701 | 30,030 | (7,843) | (12,671) | 48,731 | (20,514) |
| Ending balance | 1,734,661 | 1,604,212 | 1,584,707 | 1,520,752 | 1,734,661 | 1,584,707 |
| Balance of securities for which an allowance for credit losses has been recognized in net earnings | 1,102 | 1,463 | 1,102 | 1,463 | ||
| Unrealized Gains and Losses on Available-for-Sale Securities | ||||||
| Changes in the balance of each component of accumulated other comprehensive earnings (loss) | ||||||
| Beginning balance | (143,693) | (173,723) | (178,974) | (166,303) | (173,723) | (166,303) |
| Other comprehensive earnings before reclassifications | 17,922 | (8,571) | 47,822 | (21,846) | ||
| Amounts reclassified from accumulated other comprehensive earnings | 779 | 728 | 909 | 1,332 | ||
| Other comprehensive earnings (loss) | 18,701 | (7,843) | 48,731 | (20,514) | ||
| Ending balance | $ (124,992) | $ (143,693) | $ (186,817) | $ (178,974) | $ (124,992) | $ (186,817) |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with allowance for credit loss. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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