Allowance for Credit Losses (Narrative) (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023 USD ($) risk_code	Mar. 31, 2022 USD ($)	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Length of time projected by model		10 years
Days Past Due on Leases and Equipment Finance		181 days
Interest Income on Non-Accrual Loans and Leases | $		$ 0	$ 0
Moody's Analytics' February S2
Financing Receivable, Allowance for Credit Loss [Line Items]
Probability economy performs better than scenario		75.00%
Probability economy performs worse than scenario		25.00%
Non homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Threshold Period Past Due		90 days
Pass | Non homogeneous | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		1
Pass | Non homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		9
Watch | Non homogeneous | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		10
Watch | Non homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		11
Special mention | Non homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		12
Substandard | Non homogeneous | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		13
Substandard | Non homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		14
Doubtful | Non homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		15
Loss | Non homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		16
Loss | Non homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code (number)		16
Expected | Moody's Analytics' February baseline
Financing Receivable, Allowance for Credit Loss [Line Items]
Real GDP Growth				2.60%	2.70%	2.20%	1.30%
Unemployment Rate				4.10%	4.00%	3.90%	3.50%
Fed Funds Rate				2.50%	3.20%	4.20%	4.80%
Expected | Moody's Analytics' February S2
Financing Receivable, Allowance for Credit Loss [Line Items]
Real GDP Growth	0.40%			3.10%	3.20%		0.40%
Unemployment Rate				4.10%	4.20%	5.80%	4.80%
Fed Funds Rate				2.40%	2.10%	3.10%	4.60%
Expected | Maximum | Moody's Analytics' February S2
Financing Receivable, Allowance for Credit Loss [Line Items]
Real GDP Growth	0.90%
Unemployment Rate	6.40%