Fair Value of Financial Instruments and Fair Value Measurements - Quantitative Information for Financial Instruments Measured at Fair Value (Details) $ in Thousands	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other Real Estate	$ 1,875	$ 1,320
Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral Dependent Impaired Loans	2,178	5,985
Level 3 | Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral Dependent Impaired Loans	2,178	5,985
Valuation, Market Approach | Level 3 | Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral Dependent Impaired Loans	2,178	5,985
Other Real Estate	$ 1,875	$ 1,320
Valuation, Market Approach | Level 3 | Nonrecurring | Minimum | Measurement Input, Comparability Adjustment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral Dependent Impaired Loans, Weighted Average Discount Range	0.10	0
Other Real Estate Owned, Weighted Average Discount Range	0	0
Valuation, Market Approach | Level 3 | Nonrecurring | Maximum | Measurement Input, Comparability Adjustment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral Dependent Impaired Loans, Weighted Average Discount Range	0.80	0.20
Other Real Estate Owned, Weighted Average Discount Range	0.20	0.20