Loan and Lease Financings (Details 3) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	$ 5,595,172	$ 5,060,613
90 Days or More Past Due and Accruing	257	311
Total Accruing Loans	5,629,519	5,075,738
Nonaccrual	62,803	9,789
Total loans and leases	5,692,322	5,085,527
30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	20,512	10,496
60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	13,578	4,318
Commercial and agricultural
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	1,705,959	1,131,704
Total Accruing Loans	1,707,681	1,131,822
Nonaccrual	3,031	969
Total loans and leases	1,710,712	1,132,791
Commercial and agricultural | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	1,722	118
Commercial and agricultural | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	0	0
Auto and light truck
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	530,884	586,212
Total Accruing Loans	532,690	587,557
Nonaccrual	30,916	1,250
Total loans and leases	563,606	588,807
Auto and light truck | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	1,806	1,268
Auto and light truck | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	0	77
Medium and heavy duty truck
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	283,363	293,736
Total Accruing Loans	283,363	293,750
Nonaccrual	1,069	1,074
Total loans and leases	284,432	294,824
Medium and heavy duty truck | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	0	14
Medium and heavy duty truck | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	0	0
Aircraft
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	754,386	772,846
Total Accruing Loans	780,189	783,165
Nonaccrual	1,971	875
Total loans and leases	782,160	784,040
Aircraft | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	12,701	7,026
Aircraft | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	13,102	3,293
Construction equipment
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	715,389	702,671
Total Accruing Loans	716,767	704,099
Nonaccrual	22,260	1,352
Total loans and leases	739,027	705,451
Construction equipment | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	1,376	819
Construction equipment | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	2	609
Commercial real estate
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	939,186	906,468
Total Accruing Loans	941,808	906,526
Nonaccrual	1,163	1,651
Total loans and leases	942,971	908,177
Commercial real estate | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	2,318	58
Commercial real estate | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	304	0
Residential real estate and home equity
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	529,272	528,844
90 Days or More Past Due and Accruing	234	257
Total Accruing Loans	530,007	529,814
Nonaccrual	1,965	2,189
Total loans and leases	531,972	532,003
Residential real estate and home equity | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	377	561
Residential real estate and home equity | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	124	152
Consumer
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	136,733	138,132
90 Days or More Past Due and Accruing	23	54
Total Accruing Loans	137,014	139,005
Nonaccrual	428	429
Total loans and leases	137,442	139,434
Consumer | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	212	632
Consumer | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	$ 46	$ 187