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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 148,948	$ 155,055	$ 151,942	$ 150,326
Initial allowance on loans purchased with deteriorated credit quality	7,518		7,518
Loans charged off	(1,709)	(915)	(7,056)	(2,755)
Recoveries of loans previously charged-off	279	264	1,828	1,041
Provision for credit losses on loans HFI	29,957		37,609
Provision for (reversal of) credit losses on loans HFI	29,957	1,856	30,761	7,648
Balance at end of period	184,993	156,260	184,993	156,260
Impact of change in accounting estimate for current expected credit losses
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	20,271	22,530	16,667	19,599
Initial allowance on loans purchased with deteriorated credit quality	1,959		1,959
Loans charged off	(100)	(90)	(3,071)	(159)
Recoveries of loans previously charged-off	12	23	227	57
Provision for credit losses on loans HFI	3,933		6,789
Provision for (reversal of) credit losses on loans HFI		1,670		4,636
Balance at end of period	26,075	24,133	26,075	24,133
Commercial and industrial | Impact of change in accounting estimate for current expected credit losses
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	21,848	34,170	31,698	35,372
Initial allowance on loans purchased with deteriorated credit quality	298		298
Loans charged off	(399)	0	(399)	(92)
Recoveries of loans previously charged-off	0	0	0	0
Provision for credit losses on loans HFI	6,110		965
Provision for (reversal of) credit losses on loans HFI		(3,612)		(4,722)
Balance at end of period	27,857	30,558	27,857	30,558
Construction | Impact of change in accounting estimate for current expected credit losses
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	30,262	25,631	25,340	26,505
Initial allowance on loans purchased with deteriorated credit quality	64		64
Loans charged off	(322)	(2)	(758)	(295)
Recoveries of loans previously charged-off	6	9	26	75
Provision for credit losses on loans HFI	3,049		5,670
Provision for (reversal of) credit losses on loans HFI		341		(306)
Balance at end of period	33,059	25,979	33,059	25,979
Residential real estate: | 1-to-4 family mortgage | Impact of change in accounting estimate for current expected credit losses
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	8,671	10,097	10,952	9,468
Initial allowance on loans purchased with deteriorated credit quality	31		31
Loans charged off	0	(53)	0	(73)
Recoveries of loans previously charged-off	11	18	12	18
Provision for credit losses on loans HFI	1,745		2,891
Provision for (reversal of) credit losses on loans HFI		662		1,311
Balance at end of period	10,458	10,724	10,458	10,724
Residential real estate: | Residential line of credit | Impact of change in accounting estimate for current expected credit losses
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	10,894	8,810	10,512	8,842
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
Provision for credit losses on loans HFI	762		886
Provision for (reversal of) credit losses on loans HFI		834		802
Balance at end of period	11,815	9,644	11,815	9,644
Residential real estate: | Multi-family mortgage | Impact of change in accounting estimate for current expected credit losses
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	11,939	11,312	11,993	10,653
Initial allowance on loans purchased with deteriorated credit quality	1,515		1,515
Loans charged off	0	0	(17)	0
Recoveries of loans previously charged-off	4	12	34	240
Provision for credit losses on loans HFI	6,902		7,909
Provision for (reversal of) credit losses on loans HFI		243		674
Balance at end of period	20,360	11,567	20,360	11,567
Commercial real estate: | Commercial real estate owner occupied | Impact of change in accounting estimate for current expected credit losses
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	26,303	24,543	25,531	22,965
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	529	0
Provision for credit losses on loans HFI	4,352		6,342
Provision for (reversal of) credit losses on loans HFI		98		1,676
Balance at end of period	34,073	24,641	34,073	24,641
Commercial real estate: | Commercial real estate non-owner occupied | Impact of change in accounting estimate for current expected credit losses
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	18,760	17,962	19,249	16,922
Initial allowance on loans purchased with deteriorated credit quality	74		74
Loans charged off	(888)	(770)	(2,811)	(2,136)
Recoveries of loans previously charged-off	246	202	1,000	651
Provision for credit losses on loans HFI	3,104		6,157
Provision for (reversal of) credit losses on loans HFI		1,620		3,577
Balance at end of period	$ 21,296	$ 19,014	21,296	$ 19,014
Consumer and other | Impact of change in accounting estimate for current expected credit losses
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			$ (2,373)