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Loans and Allowance for Credit Losses - Loans - ACL for Loans and Amortized Cost Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	$ 32,914			$ 17,570
Allowance for loan losses: ending balance, individually evaluated for impairment	1,090			910
Allowance for loan losses	34,004	$ 32,588	$ 18,957	18,480	$ 16,876	$ 14,597
Loans receivable: ending balance, collectively evaluated for impairment	4,132,196			3,322,457
Loans receivable: ending balance, individually evaluated for impairment	13,461			3,697
Loans, net of unearned interest	4,145,657		3,514,119	3,314,942
Commercial portfolio \| Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	18,300			12,494
Allowance for loan losses: ending balance, individually evaluated for impairment	380			28
Allowance for loan losses	18,680	14,197	13,142	12,522	11,991	9,415
Loans receivable: ending balance, collectively evaluated for impairment	2,281,707			1,944,802
Loans receivable: ending balance, individually evaluated for impairment	6,689			713
Loans, net of unearned interest	2,288,396		2,052,934	1,942,725
Commercial portfolio \| Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	6,623			3,718
Allowance for loan losses: ending balance, individually evaluated for impairment	708			831
Allowance for loan losses	7,331	11,403	4,593	4,549	3,671	3,439
Loans receivable: ending balance, collectively evaluated for impairment	646,883			556,796
Loans receivable: ending balance, individually evaluated for impairment	1,556			1,309
Loans, net of unearned interest	648,439		596,042	555,487
Commercial portfolio \| Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	5,878			51
Allowance for loan losses: ending balance, individually evaluated for impairment	0			0
Allowance for loan losses	5,878	3,667	0	51	46	38
Loans receivable: ending balance, collectively evaluated for impairment	459,959			400,188
Loans receivable: ending balance, individually evaluated for impairment	2,256			0
Loans, net of unearned interest	462,215		441,246	398,966
Consumer portfolio \| Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	2,090			1,251
Allowance for loan losses: ending balance, individually evaluated for impairment	2			51
Allowance for loan losses	2,092	3,145	1,319	1,302	1,143	1,019
Loans receivable: ending balance, collectively evaluated for impairment	740,573			412,518
Loans receivable: ending balance, individually evaluated for impairment	2,960			1,675
Loans, net of unearned interest	743,533		416,221	409,611
Consumer portfolio \| Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	23			2
Allowance for loan losses: ending balance, individually evaluated for impairment	0			0
Allowance for loan losses	23	$ 176	29	2	$ 2	$ 2
Loans receivable: ending balance, collectively evaluated for impairment	3,074			8,153
Loans receivable: ending balance, individually evaluated for impairment	0			0
Loans, net of unearned interest	$ 3,074		$ 7,676	$ 8,153