Business Combinations (Details Textual) - USD ($)		12 Months Ended
	Nov. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jun. 06, 2022	Apr. 30, 2021
Business Acquisition [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 24.60
Goodwill, Transfers	$ 198,627,000		$ 198,627,000
Goodwill, Purchase Accounting Adjustments		$ 15,894,000
Goodwill		$ 214,521,000	$ 198,627,000	$ 1,376,736,000
Pacific Western Bank
Business Acquisition [Line Items]
Shares, Outstanding	120,000,000.0
Banc of California
Business Acquisition [Line Items]
Shares, Outstanding	57,000,000.0
Centerbridge Investor
Business Acquisition [Line Items]
Common Stock, Warrants Issued, Per Share Price	$ 15.375
April 30, 2021 Issuance
Business Acquisition [Line Items]
Subordinated debt						$ 400,000,000
Preferred Class A
Business Acquisition [Line Items]
Investment Interest Rate					7.75%
Pacific Western Bank
Business Acquisition [Line Items]
Stock Issued During Period, Shares, Acquisitions	0.6569
Pacific Western Bank | Preferred Class A
Business Acquisition [Line Items]
Investment Interest Rate					7.75%