Fair Value of Financial Instruments and Fair Value Measurements - Quantitative Information for Financial Instruments Measured at Fair Value (Details) $ in Thousands	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	$ 281	$ 1,006	$ 1,320
Fair Value, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	1,837	5,939
Other real estate owned	281	1,006
Level 3 | Fair Value, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	1,837	5,939
Other real estate owned	281	$ 1,006
Other investments	$ 4,255
Level 3 | Fair Value, Nonrecurring | Minimum | Measurement Input, Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, weighted average measurement input	0.25	0.25
Other real estate, weighted average measurement input	0	0
Level 3 | Fair Value, Nonrecurring | Maximum | Measurement Input, Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, weighted average measurement input	1	1
Other real estate, weighted average measurement input	0.20	0.20