Loans and Allowance for Credit Losses - Analysis of Aging by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 9,105,016	$ 7,604,662
90 days or  more and accruing interest	16,002	11,735
Non-accrual loans	26,625	35,568
30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	30,596	26,450
Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	9,031,793	7,530,909
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	1,534,159	1,290,565
90 days or  more and accruing interest	38	63
Non-accrual loans	1,730	1,520
Commercial and industrial | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,812	1,030
Commercial and industrial | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,530,579	1,287,952
Construction
Financing Receivable, Past Due [Line Items]
Loans	1,679,497	1,327,659
90 days or  more and accruing interest	0	718
Non-accrual loans	0	3,622
Construction | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,916	4,852
Construction | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,677,581	1,318,467
Residential real estate: | 1-to-4 family mortgage
Financing Receivable, Past Due [Line Items]
Loans	1,545,252	1,270,467
90 days or  more and accruing interest	13,767	9,363
Non-accrual loans	5,580	4,593
Residential real estate: | 1-to-4 family mortgage | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	16,994	11,007
Residential real estate: | 1-to-4 family mortgage | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,508,911	1,245,504
Residential real estate: | Residential line of credit
Financing Receivable, Past Due [Line Items]
Loans	460,774	383,039
90 days or  more and accruing interest	209	0
Non-accrual loans	1,671	1,736
Residential real estate: | Residential line of credit | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	542	319
Residential real estate: | Residential line of credit | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	458,352	380,984
Residential real estate: | Multi-family mortgage
Financing Receivable, Past Due [Line Items]
Loans	394,366	326,551
90 days or  more and accruing interest	0	0
Non-accrual loans	44	49
Residential real estate: | Multi-family mortgage | 30-89 days past due and accruing interest
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	394,322	326,502
Commercial real estate: | Owner-occupied
Financing Receivable, Past Due [Line Items]
Loans	1,158,343	951,582
90 days or  more and accruing interest	0	0
Non-accrual loans	4,873	6,710
Commercial real estate: | Owner-occupied | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	982	1,417
Commercial real estate: | Owner-occupied | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,152,488	943,455
Commercial real estate: | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,954,219	1,730,165
90 days or  more and accruing interest	0	0
Non-accrual loans	6,960	14,084
Commercial real estate: | Non-owner occupied | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	293	427
Commercial real estate: | Non-owner occupied | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	1,946,966	1,715,654
Consumer and other
Financing Receivable, Past Due [Line Items]
Loans	378,406	324,634
90 days or  more and accruing interest	1,988	1,591
Non-accrual loans	5,767	3,254
Consumer and other | 30-89 days past due and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	8,057	7,398
Consumer and other | Loans current on payments and accruing interest
Financing Receivable, Past Due [Line Items]
Loans	$ 362,594	$ 312,391