Fair Value Disclosures - Quantitative Information About Level 3 (Details)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Mortgage and Installment | Collateral Other Than Real Estate
Asset Fair Value [Abstract]
Collateral dependent loans, fair value	$ 340,000	$ 300,000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net
Asset Fair Value [Abstract]
Servicing asset, fair value	$ 46,057,000	$ 42,489,000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Present value of net servicing revenue | Float rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.0466	0.0403
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Minimum | Present value of net servicing revenue | Discount rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.1000	0.1000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Minimum | Present value of net servicing revenue | Cost to service
Ranges and Weighted Average [Abstract]
Servicing asset	63	66
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Minimum | Present value of net servicing revenue | Ancillary income
Ranges and Weighted Average [Abstract]
Servicing asset	18	20
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Minimum | Present value of net servicing revenue | Prepayment rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.0658	0.0703
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Maximum | Present value of net servicing revenue | Discount rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.1696	0.1323
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Maximum | Present value of net servicing revenue | Cost to service
Ranges and Weighted Average [Abstract]
Servicing asset	442	150
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Maximum | Present value of net servicing revenue | Ancillary income
Ranges and Weighted Average [Abstract]
Servicing asset	35	35
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Maximum | Present value of net servicing revenue | Prepayment rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.3354	0.3040
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Weighted Average | Present value of net servicing revenue | Discount rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.1021	0.1012
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Weighted Average | Present value of net servicing revenue | Cost to service
Ranges and Weighted Average [Abstract]
Servicing asset	78	78
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Weighted Average | Present value of net servicing revenue | Ancillary income
Ranges and Weighted Average [Abstract]
Servicing asset	21	21
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Weighted Average | Present value of net servicing revenue | Float rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.0466	0.0403
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis | Mortgage Loan Servicing, net | Weighted Average | Present value of net servicing revenue | Prepayment rate
Ranges and Weighted Average [Abstract]
Servicing asset	0.0778	0.0797
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial
Asset Fair Value [Abstract]
Collateral dependent loans, fair value	$ 2,769,000	$ 1,206,000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Accounts Receivable, Inventory and Machinery and Equipment
Asset Fair Value [Abstract]
Collateral dependent loans, fair value	$ 1,800,000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Minimum | Sales comparison approach | Comparability adjustment
Ranges and Weighted Average [Abstract]
Impaired loans	(0.142)	(0.417)
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Minimum | Discounting financial statement and machinery and equipment appraised values | Discount rate
Ranges and Weighted Average [Abstract]
Impaired loans	0.550
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Maximum | Sales comparison approach | Comparability adjustment
Ranges and Weighted Average [Abstract]
Impaired loans	0.428	0.200
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Maximum | Discounting financial statement and machinery and equipment appraised values | Discount rate
Ranges and Weighted Average [Abstract]
Impaired loans	1.000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Weighted Average | Sales comparison approach | Comparability adjustment
Ranges and Weighted Average [Abstract]
Impaired loans	0.040	(0.004)
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Commercial | Weighted Average | Discounting financial statement and machinery and equipment appraised values | Discount rate
Ranges and Weighted Average [Abstract]
Impaired loans	0.657
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Mortgage and Installment
Asset Fair Value [Abstract]
Collateral dependent loans, fair value	$ 1,259,000	$ 959,000
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Mortgage and Installment | Minimum | Sales comparison approach | Comparability adjustment
Ranges and Weighted Average [Abstract]
Impaired loans	(0.152)	(0.733)
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Mortgage and Installment | Maximum | Sales comparison approach | Comparability adjustment
Ranges and Weighted Average [Abstract]
Impaired loans	0.333	0.652
Significant Un- observable Inputs (Level 3) | Measured at Fair Value on a Non-recurring Basis: | Mortgage and Installment | Weighted Average | Sales comparison approach | Comparability adjustment
Ranges and Weighted Average [Abstract]
Impaired loans	0.024	(0.053)