Loans and Leases - Aging of the Recorded Investment in Past Due Loans and Leases (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable	[1]	$ 4,759,718	$ 4,707,150
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		232,296	246,941
Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,481,062	1,423,518
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		891,139	892,634
Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		158,263	159,197
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		354,641	345,131
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		712,602	723,360
Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		174,383	177,858
Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		647,177	629,426
Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		107,406	108,363
Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		749	722
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		56,277	64,669
Total | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1	366
Total | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		12,893	13,700
Total | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		4,432	6,260
Total | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,957	1,966
Total | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		16,272	14,213
Total | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		13,682	17,760
Total | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,465	1,688
Total | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		5,121	7,835
Total | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		454	881
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		23,347	29,386
30 - 59 days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	196
30 - 59 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,382	2,279
30 - 59 days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		641	2,522
30 - 59 days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		886	646
30 - 59 days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		7,054	6,074
30 - 59 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		7,921	10,113
30 - 59 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		520	987
30 - 59 days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		3,541	5,866
30 - 59 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		402	703
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		6,482	7,633
60 - 89 days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		0	161
60 - 89 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		36	1,051
60 - 89 days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		863	289
60 - 89 days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		307	816
60 - 89 days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,908	1,921
60 - 89 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,240	2,128
60 - 89 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		351	149
60 - 89 days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		769	1,048
60 - 89 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		8	70
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		26,448	27,650
90 + Days | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1	9
90 + Days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		10,475	10,370
90 + Days | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		2,928	3,449
90 + Days | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		764	504
90 + Days | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		6,310	6,218
90 + Days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		4,521	5,519
90 + Days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		594	552
90 + Days | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		811	921
90 + Days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		44	108
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		4,703,441	4,642,481
Current Loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		232,295	246,575
Current Loans | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		1,468,169	1,409,818
Current Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		886,707	886,374
Current Loans | Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		156,306	157,231
Current Loans | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		338,369	330,918
Current Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		698,920	705,600
Current Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		172,918	176,170
Current Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		642,056	621,591
Current Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		106,952	107,482
Current Loans | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable		$ 749	$ 722

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