Allowance for Credit Losses - Credit Quality Indicators by Class of Residential Real Estate and Consumer Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases, net of unearned income and deferred costs and fees	$ 5,162,503	$ 5,075,467
Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,049	2,033
One year before current fiscal year	1,166	1,142
Two years before current fiscal year	697	3,057
Three years before current fiscal year	1,132	1,600
Four years before current fiscal year	887	1,572
Prior	4,135	3,748
Revolving Loans Amortized Cost Basis	171,787	163,469
Revolving Loans Converted to Term	819	6,050
Total loans and leases, net of unearned income and deferred costs and fees	181,672	182,671
Residential real estate | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	122,172	324,967
One year before current fiscal year	276,961	282,202
Two years before current fiscal year	251,551	162,815
Three years before current fiscal year	124,799	98,480
Four years before current fiscal year	72,068	124,914
Prior	494,112	282,193
Revolving Loans Amortized Cost Basis	0	14,135
Revolving Loans Converted to Term	0	1,205
Total loans and leases, net of unearned income and deferred costs and fees	1,341,663	1,290,911
Residential real estate | Performing | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,049	2,033
One year before current fiscal year	1,166	1,142
Two years before current fiscal year	697	3,041
Three years before current fiscal year	1,117	1,600
Four years before current fiscal year	887	1,572
Prior	4,060	3,144
Revolving Loans Amortized Cost Basis	169,371	161,630
Revolving Loans Converted to Term	819	6,050
Total loans and leases, net of unearned income and deferred costs and fees	179,166	180,212
Residential real estate | Performing | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	122,172	324,967
One year before current fiscal year	276,961	282,202
Two years before current fiscal year	251,305	162,574
Three years before current fiscal year	124,191	97,778
Four years before current fiscal year	70,956	124,221
Prior	487,048	275,133
Revolving Loans Amortized Cost Basis	0	14,112
Revolving Loans Converted to Term	0	1,205
Total loans and leases, net of unearned income and deferred costs and fees	1,332,633	1,282,192
Residential real estate | Nonperforming | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
One year before current fiscal year	0	0
Two years before current fiscal year	0	16
Three years before current fiscal year	15	0
Four years before current fiscal year	0	0
Prior	75	604
Revolving Loans Amortized Cost Basis	2,416	1,839
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	2,506	2,459
Residential real estate | Nonperforming | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
One year before current fiscal year	0	0
Two years before current fiscal year	246	241
Three years before current fiscal year	608	702
Four years before current fiscal year	1,112	693
Prior	7,064	7,060
Revolving Loans Amortized Cost Basis	0	23
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	9,030	8,719
Consumer and other | Direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	12,974	20,653
One year before current fiscal year	17,506	10,744
Two years before current fiscal year	8,478	9,441
Three years before current fiscal year	7,442	5,659
Four years before current fiscal year	5,190	4,861
Prior	8,821	10,602
Revolving Loans Amortized Cost Basis	4,622	5,436
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	65,033	67,396
Consumer and other | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	1,809
One year before current fiscal year	181	856
Two years before current fiscal year	189	960
Three years before current fiscal year	1,678	587
Four years before current fiscal year	952	363
Prior	196	80
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	3,196	4,655
Consumer and other | Performing | Direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	12,974	20,653
One year before current fiscal year	17,506	10,735
Two years before current fiscal year	8,475	9,397
Three years before current fiscal year	7,419	5,542
Four years before current fiscal year	5,113	4,849
Prior	8,811	10,602
Revolving Loans Amortized Cost Basis	4,619	5,435
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	64,917	67,213
Consumer and other | Performing | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	1,809
One year before current fiscal year	181	854
Two years before current fiscal year	189	812
Three years before current fiscal year	1,549	506
Four years before current fiscal year	915	362
Prior	187	66
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	3,021	4,409
Consumer and other | Nonperforming | Direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
One year before current fiscal year	0	9
Two years before current fiscal year	3	44
Three years before current fiscal year	23	117
Four years before current fiscal year	77	12
Prior	10	0
Revolving Loans Amortized Cost Basis	3	1
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	116	183
Consumer and other | Nonperforming | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
One year before current fiscal year	0	2
Two years before current fiscal year	0	148
Three years before current fiscal year	129	81
Four years before current fiscal year	37	1
Prior	9	14
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	$ 175	$ 246