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Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Finite-lived Intangible Assets [Roll Forward] |  |  |
Balance, beginning of year | $ 236,264 | $ 91,550 | $ 133,850
Balance, beginning of year | (70,787) | (60,169) | (88,893)
Amortization expense | (32,533) | (11,368) | (13,576)
Fully amortized portion | (57,500) | (750) | (42,300)
Balance, end of year | 178,764 | 236,264 | 91,550
Net CDI and CRI, end of year | (45,820) | (70,787) | (60,169)
Net CDI and CRI, end of year | 132,944 | 165,477 | 31,381
Pacific Western Bank |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Finite-lived Intangible Assets Acquired | 0 | 145,464 | 0
CDI and CRI [Member] |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Fully amortized portion | $ (57,500) | $ (750) | $ (42,300)

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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