Loans and Leases - Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Past due	$ 17,312
Current Loans	5,250,598	$ 4,899,707
Total Loans	5,267,910	4,921,195
Loans and Leases Past Due Over 89 Days and Accruing	0	794
Nonaccrual Loans and Leases	38,976	24,281
Less: unearned income and deferred costs and fees	(7,583)	(3,645)
Financing Receivable, before Allowance for Credit Loss, Past Due	17,312
Financing Receivable, before Allowance for Credit Loss, Not Past Due	5,243,015	4,896,062
Total loans and leases, net of unearned income and deferred costs and fees	5,260,327	4,917,550
30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	1,831
Financing Receivable, before Allowance for Credit Loss, Past Due	1,831
30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		3,724
Financing Receivable, before Allowance for Credit Loss, Past Due		3,724
60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	1,181
Financing Receivable, before Allowance for Credit Loss, Past Due	1,181
90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	14,300	17,764
Financing Receivable, before Allowance for Credit Loss, Past Due	14,300	17,764
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	1,585
Current Loans	1,177,143	1,005,502
Total Loans	1,178,728	1,008,061
Loans and Leases Past Due Over 89 Days and Accruing	0	2
Nonaccrual Loans and Leases	1,775	2,335
Commercial and industrial | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	44
Commercial and industrial | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		413
Commercial and industrial | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	25
Commercial and industrial | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	1,516	2,146
Commercial and industrial | Agriculture
Financing Receivable, Past Due [Line Items]
Past due	18
Current Loans	94,471	105,721
Total Loans	94,489	105,786
Loans and Leases Past Due Over 89 Days and Accruing		0
Nonaccrual Loans and Leases		0
Total loans and leases, net of unearned income and deferred costs and fees	94,489
Commercial and industrial | Agriculture | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial and industrial | Agriculture | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial and industrial | Agriculture | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	18
Commercial and industrial | Agriculture | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	0	65
Commercial and industrial | Other
Financing Receivable, Past Due [Line Items]
Past due	1,567
Current Loans	791,420	899,781
Total Loans	792,987	902,275
Loans and Leases Past Due Over 89 Days and Accruing	0	2
Nonaccrual Loans and Leases	1,775	2,335
Total loans and leases, net of unearned income and deferred costs and fees	792,987
Commercial and industrial | Other | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	44
Commercial and industrial | Other | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		413
Commercial and industrial | Other | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	7
Commercial and industrial | Other | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	1,516	2,081
Commercial and industrial | PPP loans
Financing Receivable, Past Due [Line Items]
Past due	0
Current Loans	291,252
Total Loans	291,252	0
Total loans and leases, net of unearned income and deferred costs and fees	291,252
Commercial and industrial | PPP loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial and industrial | PPP loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial and industrial | PPP loans | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	7,388
Current Loans	2,561,804	2,431,645
Total Loans	2,569,192	2,443,565
Loans and Leases Past Due Over 89 Days and Accruing	0	542
Nonaccrual Loans and Leases	23,627	10,789
Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	263
Commercial real estate | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		1,140
Commercial real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	7,125	10,780
Commercial real estate | Agriculture
Financing Receivable, Past Due [Line Items]
Past due	263
Current Loans	201,603	184,898
Total Loans	201,866	184,898
Loans and Leases Past Due Over 89 Days and Accruing	0	0
Nonaccrual Loans and Leases	118	0
Total loans and leases, net of unearned income and deferred costs and fees	201,866
Commercial real estate | Agriculture | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	263
Commercial real estate | Agriculture | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial real estate | Agriculture | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate | Agriculture | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	0	0
Commercial real estate | Other
Financing Receivable, Past Due [Line Items]
Past due	7,125
Current Loans	2,197,185	2,033,110
Total Loans	2,204,310	2,045,030
Loans and Leases Past Due Over 89 Days and Accruing	0	542
Nonaccrual Loans and Leases	23,509	10,789
Total loans and leases, net of unearned income and deferred costs and fees	2,204,310
Commercial real estate | Other | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate | Other | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		1,140
Commercial real estate | Other | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate | Other | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	7,125	10,780
Commercial real estate | Construction
Financing Receivable, Past Due [Line Items]
Past due	0
Current Loans	163,016	213,637
Total Loans	163,016	213,637
Loans and Leases Past Due Over 89 Days and Accruing		0
Nonaccrual Loans and Leases		0
Total loans and leases, net of unearned income and deferred costs and fees	163,016
Commercial real estate | Construction | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate | Construction | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial real estate | Construction | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Commercial real estate | Construction | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	0	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Past due	7,673
Current Loans	1,428,314	1,371,433
Total Loans	1,435,987	1,377,837
Loans and Leases Past Due Over 89 Days and Accruing	0	250
Nonaccrual Loans and Leases	13,145	10,882
Residential real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	1,234
Residential real estate | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		1,692
Residential real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	1,103
Residential real estate | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	5,336	4,712
Residential real estate | Home equity
Financing Receivable, Past Due [Line Items]
Past due	2,063
Current Loans	198,764	218,170
Total Loans	200,827	219,245
Loans and Leases Past Due Over 89 Days and Accruing	0	55
Nonaccrual Loans and Leases	2,965	2,796
Total loans and leases, net of unearned income and deferred costs and fees	200,827
Residential real estate | Home equity | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	713
Residential real estate | Home equity | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		348
Residential real estate | Home equity | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	224
Residential real estate | Home equity | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	1,126	727
Residential real estate | Residential Mortgages
Financing Receivable, Past Due [Line Items]
Past due	5,610
Current Loans	1,229,550	1,153,263
Total Loans	1,235,160	1,158,592
Loans and Leases Past Due Over 89 Days and Accruing	0	195
Nonaccrual Loans and Leases	10,180	8,086
Total loans and leases, net of unearned income and deferred costs and fees	1,235,160
Residential real estate | Residential Mortgages | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	521
Residential real estate | Residential Mortgages | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		1,344
Residential real estate | Residential Mortgages | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	879
Residential real estate | Residential Mortgages | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	4,210	3,985
Consumer and other
Financing Receivable, Past Due [Line Items]
Past due	666
Current Loans	69,134	73,805
Total Loans	69,800	74,410
Loans and Leases Past Due Over 89 Days and Accruing	0	0
Nonaccrual Loans and Leases	429	275
Consumer and other | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	290
Consumer and other | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		479
Consumer and other | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	53
Consumer and other | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	323	126
Consumer and other | Other
Financing Receivable, Past Due [Line Items]
Past due	365
Current Loans	61,034	61,213
Total Loans	61,399	61,446
Loans and Leases Past Due Over 89 Days and Accruing	0	0
Nonaccrual Loans and Leases	260	158
Consumer and other | Other | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	115
Consumer and other | Other | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		167
Consumer and other | Other | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	18
Consumer and other | Other | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	232	66
Consumer and other | Indirect
Financing Receivable, Past Due [Line Items]
Past due	301
Current Loans	8,100	12,592
Total Loans	8,401	12,964
Loans and Leases Past Due Over 89 Days and Accruing	0	0
Nonaccrual Loans and Leases	169	117
Total loans and leases, net of unearned income and deferred costs and fees	8,401
Consumer and other | Indirect | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	175
Consumer and other | Indirect | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		312
Consumer and other | Indirect | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	35
Consumer and other | Indirect | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	91	60
Leases
Financing Receivable, Past Due [Line Items]
Past due	0
Current Loans	14,203	17,322
Total Loans	14,203	17,322
Loans and Leases Past Due Over 89 Days and Accruing		0
Nonaccrual Loans and Leases		0
Leases | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Leases | 30-89 Days
Financing Receivable, Past Due [Line Items]
Past due		0
Leases | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past due	0
Leases | 90 Days or More
Financing Receivable, Past Due [Line Items]
Past due	$ 0	$ 0