Fair Value Measurements, Valuation Techniques (Details) - Non-Recurring [Member]	Mar. 31, 2021 USD ($)
Cost To Service [Member] | Minimum [Member]
Fair Value Measurement Inputs [Abstract]
Servicing asset	$ 77.01
Cost To Service [Member] | Maximum [Member]
Fair Value Measurement Inputs [Abstract]
Servicing asset	839.34
Cost To Service [Member] | Weighted Average [Member]
Fair Value Measurement Inputs [Abstract]
Servicing asset	82.92
Mortgage Banking Derivatives [Member] | Pricing Models [Member]
Fair Value Measurement Inputs [Abstract]
Fair value	$ 11,601,000
Mortgage Banking Derivatives [Member] | Pricing Models [Member] | Pull Through Rate [Member] | Minimum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.180
Mortgage Banking Derivatives [Member] | Pricing Models [Member] | Pull Through Rate [Member] | Maximum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.998
Mortgage Banking Derivatives [Member] | Pricing Models [Member] | Pull Through Rate [Member] | Weighted Average [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.914
Impaired Loans [Member] | Market Approach [Member]
Fair Value Measurement Inputs [Abstract]
Fair value	$ 206,000
Impaired Loans [Member] | Market Approach [Member] | Discount Rate Applied to Appraisals [Member] | Minimum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.150
Impaired Loans [Member] | Market Approach [Member] | Discount Rate Applied to Appraisals [Member] | Maximum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.150
Impaired Loans [Member] | Market Approach [Member] | Discount Rate Applied to Appraisals [Member] | Weighted Average [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.150
Real Estate Owned [Member] | Market Approach [Member]
Fair Value Measurement Inputs [Abstract]
Fair value	$ 150,000
Real Estate Owned [Member] | Market Approach [Member] | Discount Rate Applied to Appraisals [Member] | Minimum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.348
Real Estate Owned [Member] | Market Approach [Member] | Discount Rate Applied to Appraisals [Member] | Maximum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.348
Real Estate Owned [Member] | Market Approach [Member] | Discount Rate Applied to Appraisals [Member] | Weighted Average [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.348
Mortgage Servicing Rights [Member] | Pricing Models [Member]
Fair Value Measurement Inputs [Abstract]
Fair value	$ 12,972,000
Mortgage Servicing Rights [Member] | Pricing Models [Member] | Prepayment Rate [Member] | Minimum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.081
Mortgage Servicing Rights [Member] | Pricing Models [Member] | Prepayment Rate [Member] | Maximum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.337
Mortgage Servicing Rights [Member] | Pricing Models [Member] | Prepayment Rate [Member] | Weighted Average [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.092
Mortgage Servicing Rights [Member] | Pricing Models [Member] | Discount Rate [Member] | Minimum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.081
Mortgage Servicing Rights [Member] | Pricing Models [Member] | Discount Rate [Member] | Maximum [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.120
Mortgage Servicing Rights [Member] | Pricing Models [Member] | Discount Rate [Member] | Weighted Average [Member]
Fair Value Measurement Inputs [Abstract]
Unobservable Input	0.096