Loans and Leases - Aging of the Recorded Investment in Past Due Loans and Leases (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable	[1]	$ 4,547,153	$ 4,481,600
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		238,305	210,232
Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,457,232	1,550,081
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		887,151	891,392
Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		145,813	136,136
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		267,068	122,508
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		756,429	771,718
Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		162,288	163,593
Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		524,778	530,532
Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		107,390	104,652
Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		699	756
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		47,962	52,549
Total | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		50	748
Total | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		13,357	17,052
Total | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		5,067	6,005
Total | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,497	1,882
Total | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		7,106	2,254
Total | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		13,829	15,705
Total | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,059	2,381
Total | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		4,617	5,730
Total | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		380	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		17,296	19,948
30 - 59 days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	658
30 - 59 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,348	2,891
30 - 59 days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,195	1,132
30 - 59 days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		488	751
30 - 59 days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		691	426
30 - 59 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		7,594	8,276
30 - 59 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,305	1,137
30 - 59 days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		3,432	4,220
30 - 59 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		243	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		5,550	7,281
60 - 89 days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		50	0
60 - 89 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		402	1,600
60 - 89 days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		344	1,278
60 - 89 days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		396	266
60 - 89 days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,097	247
60 - 89 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,408	2,241
60 - 89 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		178	619
60 - 89 days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		648	895
60 - 89 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		27	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		25,116	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		11,607	12,561
90 + Days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,528	3,595
90 + Days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		613	865
90 + Days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		4,318	1,581
90 + Days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		4,827	5,188
90 + Days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		576	625
90 + Days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		537	615
90 + Days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		110	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		4,499,191	4,429,051
Current Loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		238,255	209,484
Current Loans | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,443,875	1,533,029
Current Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		882,084	885,387
Current Loans | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		144,316	134,254
Current Loans | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		259,962	120,254
Current Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		742,600	756,013
Current Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		160,229	161,212
Current Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		520,161	524,802
Current Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		107,010	103,860
Current Loans | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		$ 699	$ 756

[1] Also referred to throughout this document as "total loans" and "loans held for investment."