Fair Value Disclosures Fair Value Disclosures - Unobservable Inputs (Details) $ in Thousands	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	$ 2,455	$ 2,185
OREO	4,619	1,757
Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	2,455	2,185
OREO	4,619	1,757
Appraisal And Discounted Cash Flow [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	2,455	2,185
OREO	$ 4,619	$ 1,757
Appraisal And Discounted Cash Flow [Member] | Measurement Input, Discount Rate [Member] | Fair Value, Nonrecurring [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, measurement input	9	22
OREO, measurement input	22	29