Loans and Allowance for Credit Losses - Schedule of Detail Activity in the Allowance for Credit Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Allowance for credit losses:
Balance at beginning of period	$ 121,141	$ 183,797	$ 159,604	$ 114,390	$ 114,390
Loans charged-off	(6,408)	(141,051)	(81,564)	(236,748)
Recoveries of loans previously charged-off	2,252	237	3,539	828
Net loans (charged-off) and recovered	(4,156)	(140,814)	(78,025)	(235,920)
Provision for (reversal of) credit losses	2,854	113,245	38,260	277,758
Initial allowance on purchased seasoned loans	942		942
Ending balance	120,781	156,228	120,781	156,228	159,604
Commercial
Allowance for credit losses:
Balance at beginning of period	28,673	16,171	26,607	16,293	16,293
Loans charged-off	(3,471)	(529)	(17,391)	(1,497)
Recoveries of loans previously charged-off	801	221	923	436
Net loans (charged-off) and recovered	(2,670)	(308)	(16,468)	(1,061)
Provision for (reversal of) credit losses	515	8,379	16,379	9,010
Initial allowance on purchased seasoned loans	0		0
Ending balance	26,518	24,242	26,518	24,242	26,607
Income producing - commercial real estate
Allowance for credit losses:
Balance at beginning of period	68,824	135,211	98,707	65,375	65,375
Loans charged-off	(2,937)	(123,388)	(52,464)	(197,582)
Recoveries of loans previously charged-off	0	0	1,122	329
Net loans (charged-off) and recovered	(2,937)	(123,388)	(51,342)	(197,253)
Provision for (reversal of) credit losses	3,665	83,572	22,187	227,273
Initial allowance on purchased seasoned loans	0		0
Ending balance	69,552	95,395	69,552	95,395	98,707
Owner occupied - commercial real estate
Allowance for credit losses:
Balance at beginning of period	17,186	14,634	20,719	19,295	19,295
Loans charged-off	0	(10,000)	(2,926)	(19,797)
Recoveries of loans previously charged-off	1,441	16	1,478	63
Net loans (charged-off) and recovered	1,441	(9,984)	(1,448)	(19,734)
Provision for (reversal of) credit losses	(1,906)	15,499	(2,550)	20,588
Initial allowance on purchased seasoned loans	0		0
Ending balance	16,721	20,149	16,721	20,149	20,719
Real estate mortgage - residential:
Allowance for credit losses:
Balance at beginning of period	305	382	339	472	472
Loans charged-off	0	0	(80)	0
Recoveries of loans previously charged-off	10	0	9	0
Net loans (charged-off) and recovered	10	0	(71)	0
Provision for (reversal of) credit losses	547	(25)	594	(115)
Initial allowance on purchased seasoned loans	942		942
Ending balance	1,804	357	1,804	357	339
Construction - commercial and residential:
Allowance for credit losses:
Balance at beginning of period	4,407	13,756	11,171	11,333	11,333
Loans charged-off	0	(7,134)	(8,703)	(17,837)
Recoveries of loans previously charged-off	0	0	6	0
Net loans (charged-off) and recovered	0	(7,134)	(8,697)	(17,837)
Provision for (reversal of) credit losses	(273)	7,361	1,660	20,487
Initial allowance on purchased seasoned loans	0		0
Ending balance	4,134	13,983	4,134	13,983	11,171
Construction - C&I (Owner Occupied)
Allowance for credit losses:
Balance at beginning of period	1,112	3,101	1,515	1,079	1,079
Loans charged-off	0	0	0	0
Recoveries of loans previously charged-off	0	0	0	0
Net loans (charged-off) and recovered	0	0	0	0
Provision for (reversal of) credit losses	348	(1,540)	(55)	482
Initial allowance on purchased seasoned loans	0		0
Ending balance	1,460	1,561	1,460	1,561	1,515
Home equity
Allowance for credit losses:
Balance at beginning of period	605	510	519	515	515
Loans charged-off	0	0	0	0	(206)
Recoveries of loans previously charged-off	0	0	0	0
Net loans (charged-off) and recovered	0	0	0	0
Provision for (reversal of) credit losses	(42)	5	44	0
Initial allowance on purchased seasoned loans	0		0
Ending balance	563	515	563	515	519
Other consumer
Allowance for credit losses:
Balance at beginning of period	29	32	27	28	28
Loans charged-off	0	0	0	(35)
Recoveries of loans previously charged-off	0	0	1	0
Net loans (charged-off) and recovered	0	0	1	(35)
Provision for (reversal of) credit losses	0	(6)	1	33
Initial allowance on purchased seasoned loans	0		0
Ending balance	$ 29	$ 26	$ 29	$ 26	$ 27