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Loans Receivable and Allowance for Credit Losses (Loan Modifications Made to Borrowers) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Combination - Significant Payment Delay and Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 3,779,000
Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	1,524,000	$ 4,321,547,000
Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	2,352,000
Combination - Term Extension and Interest Rate Adjustment [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis		19,225,000
Residential Real Estate Loans [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 68,000
% of Total Class of Financing Receivable	0.02%
Residential Real Estate Loans [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 53,000
% of Total Class of Financing Receivable	0.02%
Modified weighted average term	4 months
Residential Real Estate Loans [Member] | Minimum [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	5 months
Commercial Real Estate Loans [Member] | Combination - Significant Payment Delay and Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 3,779,000
% of Total Class of Financing Receivable	0.53%
Commercial Real Estate Loans [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 540,000	$ 4,321,547,000
% of Total Class of Financing Receivable	0.08%	0.64%
Commercial Real Estate Loans [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 1,424,000
% of Total Class of Financing Receivable	0.20%
Commercial Real Estate Loans [Member] | Minimum [Member] | Combination - Significant Payment Delay and Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	4 months
Commercial Real Estate Loans [Member] | Minimum [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	9 months 15 days	3 months
Commercial Real Estate Loans [Member] | Minimum [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	2 months
Commercial Real Estate Loans [Member] | Maximum [Member] | Combination - Significant Payment Delay and Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	6 months
Commercial Real Estate Loans [Member] | Maximum [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term		6 months
Commercial Real Estate Loans [Member] | Maximum [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	5 months
Commercial Loans [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 51,000
% of Total Class of Financing Receivable	0.02%
Commercial Loans [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 875,000
% of Total Class of Financing Receivable	0.41%
Commercial Loans [Member] | Minimum [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	2 months
Commercial Loans [Member] | Maximum [Member] | Significant Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	5 months
Consumer Loans [Member] | Combination - Term Extension and Interest Rate Adjustment [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis		$ 19,225,000
% of Total Class of Financing Receivable		0.01%
Weighted average interest rate		5.25%
Consumer Loans [Member] | Combination - Term Extension and Interest Rate Adjustment [Member] | New Loans Granted [Member]
Financing Receivable, Modified [Line Items]
Weighted average term		34 months
Weighted average interest rate		11.03%
Consumer Loans [Member] | Minimum [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modified weighted average term	1 month 12 days
Agricultural Real Estate Loans [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 565,000
% of Total Class of Financing Receivable	0.89%
Modified weighted average term	20 years
Other Agricultural Loans [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 300,000
% of Total Class of Financing Receivable	1.00%
Modified weighted average term	1 year

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