Loan and Lease Financings (Details 2) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
90 Days or More Past Due and Accruing	$ 24	$ 54
Total Accruing Loans	6,098,654	5,984,742
Nonaccrual	18,062	26,420
Total loans and leases	6,116,716	6,011,162
Accrued interest receivable on loans and leases	19,820	18,750
Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	6,095,160	5,980,206
30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	2,272	2,929
60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	1,198	1,553
Commercial and agricultural
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	794,345	811,167
Nonaccrual	1,084	864
Total loans and leases	795,429	812,031
Commercial and agricultural | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	793,509	810,223
Commercial and agricultural | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	836	944
Commercial and agricultural | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	0
Solar
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	375,330	381,163
Nonaccrual	0	0
Total loans and leases	375,330	381,163
Solar | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	375,330	381,163
Solar | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	0
Solar | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	0
Auto and light truck
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	865,348	793,964
Nonaccrual	10,216	14,153
Total loans and leases	875,564	808,117
Auto and light truck | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	865,316	793,610
Auto and light truck | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	32	353
Auto and light truck | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	1
Medium and heavy duty truck
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	326,588	313,847
Nonaccrual	0	15
Total loans and leases	326,588	313,862
Medium and heavy duty truck | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	326,588	313,845
Medium and heavy duty truck | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	0
Medium and heavy duty truck | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	2
Aircraft
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	1,056,289	1,077,151
Nonaccrual	540	571
Total loans and leases	1,056,829	1,077,722
Aircraft | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	1,055,282	1,075,865
Aircraft | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	223
Aircraft | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	1,007	1,063
Construction equipment
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	989,865	933,034
Nonaccrual	1,547	5,469
Total loans and leases	991,412	938,503
Construction equipment | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	989,525	932,603
Construction equipment | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	340	431
Construction equipment | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	0
Commercial real estate
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total Accruing Loans	951,162	940,516
Nonaccrual	3,059	3,229
Total loans and leases	954,221	943,745
Commercial real estate | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	951,111	940,516
Commercial real estate | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	51	0
Commercial real estate | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	0	0
Residential real estate and home equity
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
90 Days or More Past Due and Accruing	24	49
Total Accruing Loans	593,234	582,952
Nonaccrual	1,384	1,785
Total loans and leases	594,618	584,737
Residential real estate and home equity | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	592,464	582,053
Residential real estate and home equity | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	623	562
Residential real estate and home equity | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	123	288
Consumer
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
90 Days or More Past Due and Accruing	0	5
Total Accruing Loans	146,493	150,948
Nonaccrual	232	334
Total loans and leases	146,725	151,282
Consumer | Current
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	146,035	150,328
Consumer | 30 to 59 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	390	416
Consumer | 60 to 89 Days Past Due
Amortized cost of loans and leases, segregated by portfolio segment, with delinquency aging and nonaccrual status
Total loans and leases	$ 68	$ 199