Mergers and Acquisitions - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Apr. 01, 2025 |
|---|---|---|---|---|
| Business Combination [Line Items] | ||||
| Goodwill | $ 1,417,538 | $ 1,405,840 | $ 1,419,782 | |
| The First | ||||
| Business Combination [Line Items] | ||||
| Cash and cash equivalents | $ 263,352 | |||
| Securities | 1,457,377 | |||
| Loans, including loans held for sale | 5,173,334 | |||
| Premises and equipment | 179,629 | |||
| Bank-owned life insurance | 146,601 | |||
| Other real estate owned | 11,032 | |||
| Other intangible assets | 165,476 | |||
| Other assets | 175,627 | |||
| Total assets | 7,572,428 | |||
| Deposits | 6,449,393 | |||
| Borrowings | 419,165 | |||
| Other liabilities | 70,203 | |||
| Total liabilities | 6,938,761 | |||
| Net identifiable assets acquired over liabilities assumed | 633,667 | |||
| Goodwill | 419,023 | |||
| Net assets acquired over liabilities assumed | $ 1,052,690 |
| X | ||||||||||
- Definition Business Combination, Recognized Asset Acquired, Bank Owned Life Insurance No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Asset Acquired, Other Real Estate Owned No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Net of Cash Settlement for Stock Options No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Loans, Net No definition available.
|
| X | ||||||||||
- 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/exampleRef
|
| X | ||||||||||
- Definition Amount of asset acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of investment in debt and equity securities acquired in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of identifiable intangible asset acquired in business combination and recognized at acquisition date. Excludes goodwill and financial asset. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of liability assumed in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of long-term debt assumed in business combination and recognized at acquisition date, classified as noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of liability assumed in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of property, plant, and equipment acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of asset acquired in excess of (less than) liability assumed plus goodwill in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|