Loans and Leases - Aging of the Recorded Investment in Past Due Loans and Leases (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable	[1]	$ 4,611,207	$ 4,481,600
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		215,621	210,232
Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,423,479	1,550,081
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		877,472	891,392
Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		167,682	136,136
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		312,847	122,508
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		733,361	771,718
Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		174,525	163,593
Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		592,309	530,532
Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		113,314	104,652
Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		597	756
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		51,292	52,549
Total | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		359	748
Total | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		15,256	17,052
Total | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		5,242	6,005
Total | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		907	1,882
Total | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		10,507	2,254
Total | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		10,950	15,705
Total | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,255	2,381
Total | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		5,284	5,730
Total | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		532	792
Total | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	0
30 - 59 days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		15,244	19,948
30 - 59 days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		334	658
30 - 59 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,710	2,891
30 - 59 days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,742	1,132
30 - 59 days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		312	751
30 - 59 days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		786	426
30 - 59 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		3,413	8,276
30 - 59 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,640	1,137
30 - 59 days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		3,912	4,220
30 - 59 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		395	457
30 - 59 days | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	0
60 - 89 days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		7,746	7,281
60 - 89 days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		25	0
60 - 89 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		878	1,600
60 - 89 days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		870	1,278
60 - 89 days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		287	266
60 - 89 days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,972	247
60 - 89 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,814	2,241
60 - 89 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		102	619
60 - 89 days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		744	895
60 - 89 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		54	135
60 - 89 days | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	0
90 + Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		28,302	25,320
90 + Days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	90
90 + Days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		11,668	12,561
90 + Days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,630	3,595
90 + Days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		308	865
90 + Days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		6,749	1,581
90 + Days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		5,723	5,188
90 + Days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		513	625
90 + Days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		628	615
90 + Days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		83	200
90 + Days | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	0
Current Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		4,559,915	4,429,051
Current Loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		215,262	209,484
Current Loans | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,408,223	1,533,029
Current Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		872,230	885,387
Current Loans | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		166,775	134,254
Current Loans | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		302,340	120,254
Current Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		722,411	756,013
Current Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		172,270	161,212
Current Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		587,025	524,802
Current Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		112,782	103,860
Current Loans | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		$ 597	$ 756

[1] Also referred to throughout this Quarterly Report on Form 10-Q as "total loans" and "loans held for investment."