Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	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)