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Allowance for Credit Losses - Credit Quality Indicators by Commercial and Industrial Loans (Details) - USD ($) $ in Thousands	Sep. 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	$ 5,208,436	$ 5,075,467
Commercial and industrial | Commercial and industrial other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	105,118	124,331
One year before current fiscal year	101,163	59,786
Two years before current fiscal year	44,870	54,613
Three years before current fiscal year	45,993	42,768
Four years before current fiscal year	36,949	35,926
Prior	164,025	240,123
Revolving Loans Amortized Cost Basis	216,759	131,535
Revolving Loans Converted to Term	3,849	10,039
Total loans and leases, net of unearned income and deferred costs and fees	718,726	699,121
Commercial and industrial | Commercial and industrial other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	105,118	123,996
One year before current fiscal year	100,909	58,432
Two years before current fiscal year	43,941	54,116
Three years before current fiscal year	45,679	42,093
Four years before current fiscal year	36,484	35,725
Prior	162,074	239,093
Revolving Loans Amortized Cost Basis	208,925	125,476
Revolving Loans Converted to Term	3,849	10,039
Total loans and leases, net of unearned income and deferred costs and fees	706,979	688,970
Commercial and industrial | Commercial and industrial other | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	156
One year before current fiscal year	135	770
Two years before current fiscal year	455	450
Three years before current fiscal year	275	100
Four years before current fiscal year	11	201
Prior	1,432	393
Revolving Loans Amortized Cost Basis	764	1,417
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	3,072	3,487
Commercial and industrial | Commercial and industrial other | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	179
One year before current fiscal year	119	584
Two years before current fiscal year	474	47
Three years before current fiscal year	39	575
Four years before current fiscal year	454	0
Prior	519	637
Revolving Loans Amortized Cost Basis	7,070	4,642
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	8,675	6,664
Commercial and industrial | PPP loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	71,260
One year before current fiscal year	498	0
Two years before current fiscal year	377	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
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	875	71,260
Commercial and industrial | PPP loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	71,260
One year before current fiscal year	498	0
Two years before current fiscal year	377	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
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	875	71,260
Commercial and industrial | PPP loans | Special Mention
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	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
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	0	0
Commercial and industrial | PPP loans | Substandard
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	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
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	0	0
Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	11,505	8,573
One year before current fiscal year	4,460	6,867
Two years before current fiscal year	5,433	5,711
Three years before current fiscal year	4,528	10,159
Four years before current fiscal year	8,132	6,960
Prior	7,908	5,502
Revolving Loans Amortized Cost Basis	24,371	54,805
Revolving Loans Converted to Term	239	595
Total loans and leases, net of unearned income and deferred costs and fees	66,576	99,172
Commercial and industrial | Agriculture | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	11,505	8,573
One year before current fiscal year	4,460	6,782
Two years before current fiscal year	5,359	5,700
Three years before current fiscal year	4,528	10,136
Four years before current fiscal year	8,132	6,867
Prior	5,610	3,186
Revolving Loans Amortized Cost Basis	22,960	53,145
Revolving Loans Converted to Term	239	595
Total loans and leases, net of unearned income and deferred costs and fees	62,793	94,984
Commercial and industrial | Agriculture | Special Mention
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	0
Three years before current fiscal year	0	23
Four years before current fiscal year	0	0
Prior	0	0
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	0	23
Commercial and industrial | Agriculture | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
One year before current fiscal year	0	85
Two years before current fiscal year	74	11
Three years before current fiscal year	0	0
Four years before current fiscal year	0	93
Prior	2,298	2,316
Revolving Loans Amortized Cost Basis	1,411	1,660
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	3,783	4,165
Commercial real estate | Commercial and industrial other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	277,314	329,356
One year before current fiscal year	366,309	273,443
Two years before current fiscal year	314,087	263,300
Three years before current fiscal year	294,260	207,727
Four years before current fiscal year	211,566	223,667
Prior	900,326	892,837
Revolving Loans Amortized Cost Basis	10,919	45,044
Revolving Loans Converted to Term	25,170	43,225
Total loans and leases, net of unearned income and deferred costs and fees	2,399,951	2,278,599
Commercial real estate | Commercial and industrial other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	276,588	325,874
One year before current fiscal year	362,770	271,680
Two years before current fiscal year	312,387	249,266
Three years before current fiscal year	279,146	201,992
Four years before current fiscal year	206,351	212,991
Prior	836,400	810,713
Revolving Loans Amortized Cost Basis	10,778	44,264
Revolving Loans Converted to Term	25,170	43,225
Total loans and leases, net of unearned income and deferred costs and fees	2,309,590	2,160,005
Commercial real estate | Commercial and industrial other | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	643	0
One year before current fiscal year	3,427	1,763
Two years before current fiscal year	1,700	11,772
Three years before current fiscal year	11,542	3,217
Four years before current fiscal year	2,965	2,167
Prior	43,006	61,723
Revolving Loans Amortized Cost Basis	0	358
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	63,283	81,000
Commercial real estate | Commercial and industrial other | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	83	3,482
One year before current fiscal year	112	0
Two years before current fiscal year	0	2,262
Three years before current fiscal year	3,572	2,518
Four years before current fiscal year	2,250	8,509
Prior	20,920	20,401
Revolving Loans Amortized Cost Basis	141	422
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	27,078	37,594
Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	24,003	23,151
One year before current fiscal year	24,407	22,335
Two years before current fiscal year	23,558	28,943
Three years before current fiscal year	26,958	41,103
Four years before current fiscal year	38,957	23,195
Prior	68,199	52,412
Revolving Loans Amortized Cost Basis	2,810	1,984
Revolving Loans Converted to Term	1,248	2,850
Total loans and leases, net of unearned income and deferred costs and fees	210,140	195,973
Commercial real estate | Agriculture | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	24,003	23,151
One year before current fiscal year	24,407	21,856
Two years before current fiscal year	23,558	28,943
Three years before current fiscal year	26,739	41,064
Four years before current fiscal year	38,919	23,195
Prior	67,610	50,809
Revolving Loans Amortized Cost Basis	2,810	1,949
Revolving Loans Converted to Term	1,248	2,850
Total loans and leases, net of unearned income and deferred costs and fees	209,294	193,817
Commercial real estate | Agriculture | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
One year before current fiscal year	0	479
Two years before current fiscal year	0	0
Three years before current fiscal year		0
Four years before current fiscal year	0	0
Prior	375	350
Revolving Loans Amortized Cost Basis	0	35
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	375	864
Commercial real estate | Agriculture | Substandard
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	0
Three years before current fiscal year	219	39
Four years before current fiscal year	38	0
Prior	214	1,253
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	471	1,292
Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	12,059	12,840
One year before current fiscal year	76,821	10,025
Two years before current fiscal year	44,319	16,325
Three years before current fiscal year	24,559	7,542
Four years before current fiscal year	9,511	1,274
Prior	7,380	7,202
Revolving Loans Amortized Cost Basis	23,187	113,337
Revolving Loans Converted to Term	1,308	10,037
Total loans and leases, net of unearned income and deferred costs and fees	199,144	178,582
Commercial real estate | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	12,059	12,840
One year before current fiscal year	76,821	10,025
Two years before current fiscal year	44,319	16,325
Three years before current fiscal year	24,559	7,542
Four years before current fiscal year	9,511	1,274
Prior	7,380	6,559
Revolving Loans Amortized Cost Basis	23,187	112,537
Revolving Loans Converted to Term	1,308	10,037
Total loans and leases, net of unearned income and deferred costs and fees	199,144	177,139
Commercial real estate | Construction | Special Mention
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	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
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	0	0
Commercial real estate | Construction | Substandard
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	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	643
Revolving Loans Amortized Cost Basis	0	800
Revolving Loans Converted to Term	0	0
Total loans and leases, net of unearned income and deferred costs and fees	$ 0	$ 1,443

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