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Earnings (Loss) Per Share - Net income per share (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Nov. 30, 2023 | Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Net earnings (loss) available to common and equivalent stockholders, basic |  | $ 20,386 |  | $ 20,905 | $ (207,361) |  | $ 41,291 |  | $ (1,412,732) |
Less: Earnings allocated to unvested restricted stock |  |  |  |  | 82 |  |  |  | (238) | [1]
Net earnings (loss) allocated to common and equivalent shares |  | $ 20,388 |  |  | $ (207,279) |  | $ 41,240 |  | $ (1,412,970) |
Weighted average basic shares and unvested restricted stock outstanding (shares) |  | 169,005,000 |  |  | 79,009,000 |  | 168,989,000 |  | 78,997,000 | [2]
Less: weighted-average unvested restricted stock outstanding (shares) |  | (573,000) | [3] |  | (1,327,000) | [3] | (702,000) |  | (1,421,000) | [2]
Weighted-average basic shares outstanding (shares) |  | 168,432,000 |  |  | 77,682,000 |  | 168,287,000 |  | 77,576,000 | [2]
Basic earnings (loss) per share (usd per share) |  | $ 0.12 |  | $ 0.12 | $ (2.67) |  | $ 0.25 |  | $ (18.21) |
Net earnings from continuing operations allocated to common shares |  | $ 20,388 |  |  | $ (207,279) |  | $ 41,240 |  | $ (1,412,970) |
Weighted average diluted shares outstanding, diluted (usd per share) |  | 168,432,000 |  |  | 77,682,000 |  | 168,287,000 |  | 77,576,000 | [2]
Diluted net income per share (usd per share) |  | $ 0.12 |  | $ 0.12 | $ (2.67) |  | $ 0.25 |  | $ (18.21) |
Pacific Western Bank |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, acquisitions | 0.6569 |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Less: Earnings allocated to unvested restricted stock |  | $ 2 |  |  |  |  | $ (51) | [1] |  |
Voting Common Stock | Common Stock |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Net earnings (loss) available to common and equivalent stockholders, basic |  | 19,100 |  |  |  |  | 38,622 |  |  |
Less: Earnings allocated to unvested restricted stock |  | 2 |  |  |  |  | (51) |  |  |
Net earnings (loss) allocated to common and equivalent shares |  | $ 19,102 |  |  |  |  | $ 38,571 |  |  |
Weighted average basic shares and unvested restricted stock outstanding (shares) |  | 158,381,000 |  |  |  |  | 158,110,000 |  |  |
Less: weighted-average unvested restricted stock outstanding (shares) |  | (573,000) |  |  |  |  | (702,000) |  |  |
Weighted-average basic shares outstanding (shares) |  | 157,808,000 |  |  |  |  | 157,408,000 |  |  |
Basic earnings (loss) per share (usd per share) |  | $ 0.12 |  |  |  |  | $ 0.25 |  |  |
Net earnings from continuing operations allocated to common shares |  | $ 19,102 |  |  |  |  | $ 38,571 |  |  |
Weighted average diluted shares outstanding, diluted (usd per share) |  | 157,808,000 |  |  |  |  | 157,408,000 |  |  |
Diluted net income per share (usd per share) |  | $ 0.12 |  |  |  |  | $ 0.25 |  |  |
Class B Nonvoting | Common Stock |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Net earnings (loss) available to common and equivalent stockholders, basic |  | $ 58 |  |  |  |  | $ 117 |  |  |
Less: Earnings allocated to unvested restricted stock |  | 0 |  |  |  |  | 0 |  |  |
Net earnings (loss) allocated to common and equivalent shares |  | $ 58 |  |  |  |  | $ 117 |  |  |
Weighted average basic shares and unvested restricted stock outstanding (shares) |  | 477,000 |  |  |  |  | 477,000 |  |  |
Less: weighted-average unvested restricted stock outstanding (shares) |  | 0 |  |  |  |  | 0 |  |  |
Weighted-average basic shares outstanding (shares) |  | 477,000 |  |  |  |  | 477,000 |  |  |
Basic earnings (loss) per share (usd per share) |  | $ 0.12 |  |  |  |  | $ 0.25 |  |  |
Net earnings from continuing operations allocated to common shares |  | $ 58 |  |  |  |  | $ 117 |  |  |
Weighted average diluted shares outstanding, diluted (usd per share) |  | 477,000 |  |  |  |  | 477,000 |  |  |
Diluted net income per share (usd per share) |  | $ 0.12 |  |  |  |  | $ 0.25 |  |  |
Nonvoting Common Stock | Common Stock |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Net earnings (loss) available to common and equivalent stockholders, basic |  | $ 1,228 |  |  |  |  | $ 2,552 |  |  |
Less: Earnings allocated to unvested restricted stock |  | 0 |  |  |  |  | 0 |  |  |
Net earnings (loss) allocated to common and equivalent shares |  | $ 1,228 |  |  |  |  | $ 2,552 |  |  |
Nonvoting Common Stock Equivalents | Common Stock |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted average basic shares and unvested restricted stock outstanding (shares) |  | 10,147,000 |  |  |  |  | 10,402,000 |  |  |
Less: weighted-average unvested restricted stock outstanding (shares) |  | 0 |  |  |  |  | 0 |  |  |
Weighted-average basic shares outstanding (shares) |  | 10,147,000 |  |  |  |  | 10,402,000 |  |  |
Basic earnings (loss) per share (usd per share) |  | $ 0.12 |  |  |  |  | $ 0.25 |  |  |
Net earnings from continuing operations allocated to common shares |  | $ 1,228 |  |  |  |  | $ 2,552 |  |  |
Weighted average diluted shares outstanding, diluted (usd per share) |  | 10,147,000 |  |  |  |  | 10,402,000 |  |  |
Diluted net income per share (usd per share) |  | $ 0.12 |  |  |  |  | $ 0.25 |  |  |
[1] | Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.
[2] | Share amounts for the six months ended June 30, 2023 have been restated by multiplying historical amounts by the Merger exchange ratio of 0.6569
[3] | Share amounts for the three and six months ended June 30, 2023 have been restated by multiplying historical amounts by the Merger exchange ratio of 0.6569

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- Definition This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-13 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-10 + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-10 + Details
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- Definition Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-13 + Details
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