Business Combinations - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Apr. 17, 2026 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Asset Acquisition [Line Items] | |||||||
| Total assets | $ 20,522,193 | $ 20,522,193 | $ 15,631,054 | ||||
| Cash and cash equivalents | 256,062 | 256,062 | 376,389 | ||||
| Premises and equipment | 32,856 | 32,856 | 26,505 | ||||
| Bank owned life insurance ("BOLI") | 418,119 | 418,119 | 325,299 | ||||
| Other assets | 417,943 | 417,943 | 265,868 | ||||
| Goodwill | $ 334,100 | 1,099,936 | 1,099,936 | 765,822 | $ 765,822 | ||
| Noninterest-bearing deposits | 8,416,327 | 8,416,327 | 6,800,691 | ||||
| Interest-bearing deposits | 7,313,852 | 7,313,852 | $ 5,271,291 | ||||
| Intangible assets | 116,600 | ||||||
| Fair value | 327,500 | ||||||
| Acquisition related expenses | $ 8,140 | $ 0 | $ 40,669 | $ 0 | |||
| Heritage Commerce Corp [Member] | |||||||
| Asset Acquisition [Line Items] | |||||||
| Goodwill | $ 334,114 | ||||||
| Shareholders receive | $ 0.65 | ||||||
| Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares | 40,621,024 | ||||||
| Per share | $ 20.68 | ||||||
| Payments to Acquire Businesses, Gross | $ 5,324 | ||||||
| Fair value | 129 | ||||||
| Total merger consideration | $ 845,497 | ||||||
| X | ||||||||||
- Definition Common Stock Shareholders Received 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/disclosureRef
|
| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Per share price of saleable stock paid or offered to be paid by acquirer in business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Fair value of equity issued in a business combination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| 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 | ||||||||||
- Definition Amount of indefinite-lived intangible asset. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The aggregate of all domestic and foreign interest-bearing deposit liabilities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|