Loan and Lease Financings (Details 4) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)
Loan modifications to borrowers experiencing financial difficulties
Percent of Total Segment of Financing Receivable	0.27%
Commitments to lend additional amounts	$ 2,270
Weighted Average Interest Rate Reduction	3.00%
Weighted Average Term Extension Modification (in months)	4 months
Weighted Average Payment Delay (in months)	6 months
Combination Weighted Average Payment Delay and Term Extension (in months)	10 months
Loan modifications to borrowers experiencing financial difficulties subsequent default | item	1
Loan and Lease Financings
90 Days or More Past Due and Accruing	$ 149	$ 54
Payment Deferral
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	3,304
Extended Maturity
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	1,496
Contractual Interest Rate Reduction
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	426
Combination Payment Delay and Term Extension
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	12,587
Financial Asset, Equal to or Greater than 90 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	2,847
Current
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	14,678
30 to 59 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	288
60 to 89 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Financial Asset, Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 3,135
Commercial and agricultural
Loan modifications to borrowers experiencing financial difficulties
Percent of Total Segment of Financing Receivable	0.59%
Weighted Average Interest Rate Reduction	0.00%
Weighted Average Term Extension Modification (in months)	3 months
Weighted Average Payment Delay (in months)	6 months
Combination Weighted Average Payment Delay and Term Extension (in months)	30 months
Commercial and agricultural | Payment Deferral
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 3,016
Commercial and agricultural | Extended Maturity
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial and agricultural | Contractual Interest Rate Reduction
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial and agricultural | Combination Payment Delay and Term Extension
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	1,537
Commercial and agricultural | Financial Asset, Equal to or Greater than 90 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	2,847
Commercial and agricultural | Current
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	1,706
Commercial and agricultural | 30 to 59 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial and agricultural | 60 to 89 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial and agricultural | Financial Asset, Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 2,847
Medium and heavy duty truck
Loan modifications to borrowers experiencing financial difficulties
Percent of Total Segment of Financing Receivable	3.54%
Weighted Average Interest Rate Reduction	0.00%
Weighted Average Term Extension Modification (in months)	0 months
Weighted Average Payment Delay (in months)	0 months
Combination Weighted Average Payment Delay and Term Extension (in months)	6 months
Medium and heavy duty truck | Payment Deferral
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 0
Medium and heavy duty truck | Extended Maturity
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Medium and heavy duty truck | Contractual Interest Rate Reduction
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Medium and heavy duty truck | Combination Payment Delay and Term Extension
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	11,050
Medium and heavy duty truck | Financial Asset, Equal to or Greater than 90 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Medium and heavy duty truck | Current
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	11,050
Medium and heavy duty truck | 30 to 59 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Medium and heavy duty truck | 60 to 89 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Medium and heavy duty truck | Financial Asset, Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 0
Construction equipment
Loan modifications to borrowers experiencing financial difficulties
Percent of Total Segment of Financing Receivable	0.14%
Weighted Average Interest Rate Reduction	0.00%
Weighted Average Term Extension Modification (in months)	5 months
Weighted Average Payment Delay (in months)	0 months
Combination Weighted Average Payment Delay and Term Extension (in months)	0 months
Construction equipment | Payment Deferral
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 0
Construction equipment | Extended Maturity
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	1,496
Construction equipment | Contractual Interest Rate Reduction
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Construction equipment | Combination Payment Delay and Term Extension
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Construction equipment | Financial Asset, Equal to or Greater than 90 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Construction equipment | Current
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	1,496
Construction equipment | 30 to 59 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Construction equipment | 60 to 89 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Construction equipment | Financial Asset, Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 0
Commercial real estate
Loan modifications to borrowers experiencing financial difficulties
Percent of Total Segment of Financing Receivable	0.06%
Weighted Average Interest Rate Reduction	3.00%
Weighted Average Term Extension Modification (in months)	0 months
Weighted Average Payment Delay (in months)	3 months
Combination Weighted Average Payment Delay and Term Extension (in months)	0 months
Commercial real estate | Payment Deferral
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	$ 288
Commercial real estate | Extended Maturity
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial real estate | Contractual Interest Rate Reduction
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	426
Commercial real estate | Combination Payment Delay and Term Extension
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial real estate | Current
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	426
Commercial real estate | 30 to 59 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	288
Commercial real estate | 60 to 89 Days Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	0
Commercial real estate | Financial Asset, Past Due
Loan modifications to borrowers experiencing financial difficulties
Loan modifications to borrowers experiencing financial difficulties	288
Residential real estate and home equity
Loan and Lease Financings
90 Days or More Past Due and Accruing	142	49
Consumer
Loan and Lease Financings
90 Days or More Past Due and Accruing	$ 7	$ 5