Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Assets | ||
| Securities available-for-sale, amortized cost | $ 1,896,135,000 | $ 1,842,444,000 |
| Securities available-for-sale, allowance for credit Losses (ACL) | 0 | 0 |
| Securities held to maturity, net of ACL | 0 | 0 |
| Securities held to maturity, fair value | $ 1,127,076,000 | $ 1,180,569,000 |
| Shareholders' Equity | ||
| Common stock, par value (in dollars per share) | $ 0 | $ 0 |
| Common stock, authorized (in shares) | 250,000,000 | 250,000,000 |
| Common stock, issued (in shares) | 58,679,730 | 59,012,423 |
| Common stock, outstanding (in shares) | 58,679,730 | 59,012,423 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Face amount per share of no-par value common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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