Loans and Allowance for Credit Losses - Analysis of Aging by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 8,624,337	$ 7,604,662
90 days or  more and accruing interest	14,585	11,735
Non-accrual loans	29,535	35,568
30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	28,486	26,450
Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	8,551,731	7,530,909
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	1,479,424	1,290,565
90 days or  more and accruing interest	55	63
Non-accrual loans	3,414	1,520
Commercial and industrial | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,929	1,030
Commercial and industrial | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,474,026	1,287,952
Construction
Financing Receivable, Past Due [Line Items]
Loans	1,575,331	1,327,659
90 days or  more and accruing interest	2,675	718
Non-accrual loans	0	3,622
Construction | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	2,654	4,852
Construction | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,570,002	1,318,467
Residential real estate: | 1-to-4 family mortgage
Financing Receivable, Past Due [Line Items]
Loans	1,457,452	1,270,467
90 days or  more and accruing interest	9,675	9,363
Non-accrual loans	6,322	4,593
Residential real estate: | 1-to-4 family mortgage | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	13,989	11,007
Residential real estate: | 1-to-4 family mortgage | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,427,466	1,245,504
Residential real estate: | Residential line of credit
Financing Receivable, Past Due [Line Items]
Loans	425,485	383,039
90 days or  more and accruing interest	48	0
Non-accrual loans	1,457	1,736
Residential real estate: | Residential line of credit | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	912	319
Residential real estate: | Residential line of credit | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	423,068	380,984
Residential real estate: | Multi-family mortgage
Financing Receivable, Past Due [Line Items]
Loans	391,970	326,551
90 days or  more and accruing interest	329	0
Non-accrual loans	46	49
Residential real estate: | Multi-family mortgage | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate: | Multi-family mortgage | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	391,595	326,502
Commercial real estate: | Owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,053,872	951,582
90 days or  more and accruing interest	707	0
Non-accrual loans	6,416	6,710
Commercial real estate: | Owner occupied | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	323	1,417
Commercial real estate: | Owner occupied | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,046,426	943,455
Commercial real estate: | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,885,122	1,730,165
90 days or  more and accruing interest	0	0
Non-accrual loans	7,263	14,084
Commercial real estate: | Non-owner occupied | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	282	427
Commercial real estate: | Non-owner occupied | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,877,577	1,715,654
Consumer and other
Financing Receivable, Past Due [Line Items]
Loans	355,681	324,634
90 days or  more and accruing interest	1,096	1,591
Non-accrual loans	4,617	3,254
Consumer and other | 30-89 days past due
Financing Receivable, Past Due [Line Items]
Loans	8,397	7,398
Consumer and other | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	$ 341,571	$ 312,391