Loans and Allowance for Credit Losses on Loans HFI - Schedule of Changes in Allowance for Credit Losses on Loans HFI by Class of Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 194,010	$ 148,948	$ 185,983	$ 151,942
Initial allowance on loans purchased with deteriorated credit quality		7,518		7,518
Loans charged-off	(1,874)	(1,709)	(8,389)	(7,056)
Recoveries of loans previously charged-off	657	279	1,722	1,828
(Reversal of) provision for credit losses on loans HFI	1,167	29,957	14,644	37,609
Balance at end of period	193,960	184,993	193,960	184,993
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				(6,848)
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	26,275	20,271	24,130	16,667
Initial allowance on loans purchased with deteriorated credit quality		1,959		1,959
Loans charged-off	0	(100)	(2,805)	(3,071)
Recoveries of loans previously charged-off	28	12	277	227
(Reversal of) provision for credit losses on loans HFI	(472)	3,933	4,229	6,789
Balance at end of period	25,831	26,075	25,831	26,075
Commercial and industrial \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				3,504
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	27,457	21,848	25,633	31,698
Initial allowance on loans purchased with deteriorated credit quality		298		298
Loans charged-off	0	(399)	(315)	(399)
Recoveries of loans previously charged-off	0	0	27	0
(Reversal of) provision for credit losses on loans HFI	(685)	6,110	1,427	965
Balance at end of period	26,772	27,857	26,772	27,857
Construction \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				(4,705)
Residential real estate: \| 1-to-4 family mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	33,846	30,262	33,218	25,340
Initial allowance on loans purchased with deteriorated credit quality		64		64
Loans charged-off	(120)	(322)	(946)	(758)
Recoveries of loans previously charged-off	15	6	81	26
(Reversal of) provision for credit losses on loans HFI	2,282	3,049	3,670	5,670
Balance at end of period	36,023	33,059	36,023	33,059
Residential real estate: \| 1-to-4 family mortgage \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				2,717
Residential real estate: \| Residential line of credit
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	10,186	8,671	10,589	10,952
Initial allowance on loans purchased with deteriorated credit quality		31		31
Loans charged-off	(5)	0	(28)	0
Recoveries of loans previously charged-off	1	11	2	12
(Reversal of) provision for credit losses on loans HFI	(185)	1,745	(566)	2,891
Balance at end of period	9,997	10,458	9,997	10,458
Residential real estate: \| Residential line of credit \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				(3,428)
Residential real estate: \| Multi-family mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	11,566	10,894	12,260	10,512
Initial allowance on loans purchased with deteriorated credit quality		159		159
Loans charged-off	0	0	0	0
Recoveries of loans previously charged-off	0	0	0	0
(Reversal of) provision for credit losses on loans HFI	159	762	(535)	886
Balance at end of period	11,725	11,815	11,725	11,815
Residential real estate: \| Multi-family mortgage \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				258
Commercial real estate: \| Commercial real estate owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	19,961	11,939	21,609	11,993
Initial allowance on loans purchased with deteriorated credit quality		1,515		1,515
Loans charged-off	0	0	0	(17)
Recoveries of loans previously charged-off	10	4	39	34
(Reversal of) provision for credit losses on loans HFI	(433)	6,902	(2,110)	7,909
Balance at end of period	19,538	20,360	19,538	20,360
Commercial real estate: \| Commercial real estate owner occupied \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				(1,074)
Commercial real estate: \| Commercial real estate non-owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	42,003	26,303	36,235	25,531
Initial allowance on loans purchased with deteriorated credit quality		3,418		3,418
Loans charged-off	0	0	0	0
Recoveries of loans previously charged-off	0	0	0	529
(Reversal of) provision for credit losses on loans HFI	(51)	4,352	5,717	6,342
Balance at end of period	41,952	34,073	41,952	34,073
Commercial real estate: \| Commercial real estate non-owner occupied \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				(1,747)
Consumer and other
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	22,716	18,760	22,309	19,249
Initial allowance on loans purchased with deteriorated credit quality		74		74
Loans charged-off	(1,749)	(888)	(4,295)	(2,811)
Recoveries of loans previously charged-off	603	246	1,296	1,000
(Reversal of) provision for credit losses on loans HFI	552	3,104	2,812	6,157
Balance at end of period	$ 22,122	$ 21,296	$ 22,122	21,296
Consumer and other \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period				$ (2,373)

Financing Receivable, Credit Loss, Expense (Reversal), Excluding Change In Accounting Estimate

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of increase in allowance for credit loss for financing receivable purchased with credit deterioration.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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