Accumulated Other Comprehensive Income (Loss) - Components Of AOCI (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||
| Stockholders' equity attributable to parent | $ 1,716,460 | $ 1,682,950 | $ 1,654,168 | $ 1,556,180 | $ 1,508,176 | $ 1,445,611 |
| Total accumulated other comprehensive income (loss) | (157,293) | (149,375) | ||||
| Unrealized Loss on Securities Available for Sale | ||||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||
| Total accumulated other comprehensive income (loss) | (204,469) | (194,122) | ||||
| Tax effect | 47,216 | 44,826 | ||||
| Stockholders' equity attributable to parent | (157,253) | (152,053) | (149,296) | (229,603) | (246,713) | (282,114) |
| Postretirement Plans Asset (Liability) | ||||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||
| Total accumulated other comprehensive income (loss) | (51) | (102) | ||||
| Tax effect | 11 | 23 | ||||
| Stockholders' equity attributable to parent | $ (40) | $ (59) | $ (79) | $ 85 | $ 85 | $ 85 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners). No definition available.
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- Definition Amount of tax expense (benefit) allocated to accumulated other comprehensive income (loss) attributable to parent. No definition available.
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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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