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Loans - Collateral Dependent Loans, Individually Evaluated for Allowance for Credit Loss (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 Loss [Line Items]
Total collateral dependent loans, amortized cost	$ 6,179,522		$ 5,928,933
Total collateral dependent loans, related allowance	78,666	$ 77,362	65,917	$ 59,678	$ 56,077	$ 47,547
Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	14,006		8,053
Collateral dependent loans with allowance, related allowance	5,079		1,412
Collateral dependent loans with no related allowance, amortized cost	26,526		20,905
Total collateral dependent loans, amortized cost	40,532		28,958
Total collateral dependent loans, related allowance	5,079		1,412
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	2,459,358		3,025,074
Total collateral dependent loans, related allowance	34,641	33,197	40,785	35,588	33,305	31,622
Commercial and industrial | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	11,991		6,330
Collateral dependent loans with allowance, related allowance	4,794		1,101
Collateral dependent loans with no related allowance, amortized cost	44		3,164
Total collateral dependent loans, amortized cost	12,035		9,494
Total collateral dependent loans, related allowance	4,794		1,101
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	1,842,455		1,753,360
Total collateral dependent loans, related allowance	23,102	21,598	19,754	19,566	18,351	13,198
Commercial real estate | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	710		796
Collateral dependent loans with allowance, related allowance	210		189
Collateral dependent loans with no related allowance, amortized cost	4,400		7,487
Total collateral dependent loans, amortized cost	5,110		8,283
Total collateral dependent loans, related allowance	210		189
Commercial real estate | Non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	767,135
Commercial real estate | Non-owner occupied | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	96		115
Collateral dependent loans with allowance, related allowance	22		36
Collateral dependent loans with no related allowance, amortized cost	4,086		2,033
Total collateral dependent loans, amortized cost	4,182		2,148
Total collateral dependent loans, related allowance	22		36
Commercial real estate | Owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	631,352
Commercial real estate | Owner occupied | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	614		681
Collateral dependent loans with allowance, related allowance	188		153
Collateral dependent loans with no related allowance, amortized cost	126		5,256
Total collateral dependent loans, amortized cost	740		5,937
Total collateral dependent loans, related allowance	188		153
Commercial real estate | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	329,433
Commercial real estate | Construction and land | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	0		0
Collateral dependent loans with allowance, related allowance	0		0
Collateral dependent loans with no related allowance, amortized cost	188		198
Total collateral dependent loans, amortized cost	188		198
Total collateral dependent loans, related allowance	0		0
Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	1,059,074		1,106,793
Total collateral dependent loans, related allowance	13,157	14,959	2,963	2,617	2,418	836
Residential real estate | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	1,304		836
Collateral dependent loans with allowance, related allowance	74		34
Collateral dependent loans with no related allowance, amortized cost	19,250		9,779
Total collateral dependent loans, amortized cost	20,554		10,615
Total collateral dependent loans, related allowance	74		34
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	37,681		43,706
Total collateral dependent loans, related allowance	702	854	352	333	318	235
Consumer | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	1		91
Collateral dependent loans with allowance, related allowance	1		88
Collateral dependent loans with no related allowance, amortized cost	0		0
Total collateral dependent loans, amortized cost	1		91
Total collateral dependent loans, related allowance	1		88
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total collateral dependent loans, amortized cost	178,110
Total collateral dependent loans, related allowance	1,423	$ 1,248	399	$ 144	$ 147	$ 112
Other | Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral dependent loans with allowance, amortized allowance	0		0
Collateral dependent loans with allowance, related allowance	0		0
Collateral dependent loans with no related allowance, amortized cost	2,832		475
Total collateral dependent loans, amortized cost	2,832		475
Total collateral dependent loans, related allowance	$ 0		$ 0

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