Loans, Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate				3.00%
Interest Rate Reduction [Member] | Commercial Real Estate Residential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification		9.50%		9.50%	9.50%
Weighted-average contractual interest rate, post-modification		7.50%		7.80%	7.80%
Interest Rate Reduction [Member] | Commercial Real Estate Nonresidential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification				9.50%	9.50%
Weighted-average contractual interest rate, post-modification				7.50%	7.50%
Interest Rate Reduction [Member] | Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	6.20%		7.80%		7.00%
Weighted-average contractual interest rate, post-modification	3.30%		4.70%		4.40%
Term Extension [Member] | Commercial Real Estate Residential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased		2 years	3 months 18 days	7 months 6 days	6 months
Term Extension [Member] | Commercial Real Estate Nonresidential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased		2 months 12 days		1 month 6 days	1 month 6 days
Term Extension [Member] | Commercial Other [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	3 months 18 days	9 months 18 days	3 months 18 days	1 year 4 months 24 days	3 years
Term Extension [Member] | Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	1 year 4 months 24 days	1 year	9 months 18 days	2 years 3 months 18 days	2 years 9 months 18 days
Term Extension [Member] | Home Equity Lines [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased		4 years 10 months 24 days	6 months	5 years 9 months 18 days	6 years 1 month 6 days
Term Extension [Member] | Consumer Direct [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	2 months 12 days		1 month 6 days
Weighted-average term decreased				8 months 12 days	9 months 18 days
Term Extension [Member] | Consumer Indirect [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased			3 months 18 days	3 months 18 days	3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Real Estate Residential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate			8.50%
Weighted-average contractual interest rate, pre-modification				10.80%
Weighted-average contractual interest rate, post-modification				6.50%
Weighted-average term increased			4 years	3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Real Estate Nonresidential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification			6.00%
Weighted-average contractual interest rate, post-modification			8.50%
Weighted-average term increased			10 years 3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Other [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	4.00%		4.30%		12.80%
Weighted-average contractual interest rate, post-modification	8.50%		8.50%		11.30%
Weighted-average term increased	15 years		14 years 3 months 18 days		2 years 10 months 24 days
Combination - Term Extension and Interest Rate Reduction [Member] | Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate	8.50%
Weighted-average contractual interest rate, pre-modification		5.80%	5.60%	6.30%	6.30%
Weighted-average contractual interest rate, post-modification		5.70%	4.20%	5.90%	5.80%
Weighted-average term increased	20 years	13 years 1 month 6 days	4 years 3 months 18 days	12 years 4 months 24 days	12 years 2 months 12 days
Combination - Term Extension and Interest Rate Reduction [Member] | Home Equity Lines [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	5.40%	9.90%	9.30%	9.40%	9.40%
Weighted-average contractual interest rate, post-modification	3.00%	8.30%	8.60%	8.10%	8.10%
Weighted-average term increased	1 year 4 months 24 days	8 years 2 months 12 days	13 years 1 month 6 days	9 years 4 months 24 days	9 years 3 months 18 days