Loans and Allowance for Credit Losses on Loans HFI - Schedule of Analysis of Aging by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Total	$ 12,297,600	$ 9,602,384
90 days or  more and accruing interest	26,311	24,347
Nonaccrual loans	89,448	59,358
30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	54,629	47,855
Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	12,127,212	9,470,824
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total	2,155,105	1,691,213
90 days or  more and accruing interest	20	730
Nonaccrual loans	6,906	9,661
Commercial and industrial | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	975	1,204
Commercial and industrial | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	2,147,204	1,679,618
Construction
Financing Receivable, Past Due [Line Items]
Total	1,195,392	1,087,732
90 days or  more and accruing interest	415	538
Nonaccrual loans	30,953	10,915
Construction | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	5,132	3,288
Construction | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	1,158,892	1,072,991
Residential real estate: | 1-to-4 family mortgage
Financing Receivable, Past Due [Line Items]
Total	1,852,626	1,616,754
90 days or  more and accruing interest	18,159	15,319
Nonaccrual loans	11,286	12,625
Residential real estate: | 1-to-4 family mortgage | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	24,132	24,376
Residential real estate: | 1-to-4 family mortgage | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	1,799,049	1,564,434
Residential real estate: | Residential line of credit
Financing Receivable, Past Due [Line Items]
Total	707,303	602,475
90 days or  more and accruing interest	496	357
Nonaccrual loans	1,846	1,537
Residential real estate: | Residential line of credit | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	1,930	2,302
Residential real estate: | Residential line of credit | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	703,031	598,279
Residential real estate: | Multi-family mortgage
Financing Receivable, Past Due [Line Items]
Total	736,424	653,769
90 days or  more and accruing interest	0	0
Nonaccrual loans	9,325	21
Residential real estate: | Multi-family mortgage | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	0	979
Residential real estate: | Multi-family mortgage | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	727,099	652,769
Commercial real estate: | Owner-occupied
Financing Receivable, Past Due [Line Items]
Total	2,124,920	1,357,568
90 days or  more and accruing interest	361	94
Nonaccrual loans	10,639	9,551
Commercial real estate: | Owner-occupied | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	1,875	1,996
Commercial real estate: | Owner-occupied | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	2,112,045	1,345,927
Commercial real estate: | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total	2,890,233	2,099,129
90 days or  more and accruing interest	0	3,512
Nonaccrual loans	5,649	2,667
Commercial real estate: | Non-owner occupied | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	3,676	0
Commercial real estate: | Non-owner occupied | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	2,880,908	2,092,950
Consumer and other
Financing Receivable, Past Due [Line Items]
Total	635,597	493,744
90 days or  more and accruing interest	6,860	3,797
Nonaccrual loans	12,844	12,381
Consumer and other | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Total	16,909	13,710
Consumer and other | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Total	$ 598,984	$ 463,856