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Disclosures about Fair Value Measurements and Financial Instruments - Schedule of assets measured and recorded at fair value on a non-recurring basis (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Disclosures about Fair Value Measurements and Financial Instruments |  |
Impaired loan with carrying value | $ 266,000 |
Specific valuation allowance | 8,000 |
Impaired loans | 258,000 |
Fair Value Measurements, Nonrecurring Basis |  |
Disclosures about Fair Value Measurements and Financial Instruments |  |
Impaired loans | $ 258,000 | $ 258,000
Fair Value Measurements, Nonrecurring Basis | Impaired loans |  |
Disclosures about Fair Value Measurements and Financial Instruments |  |
Valuation Techniques | Appraisal of collateral | Appraisal of collateral
Fair Value Measurements, Nonrecurring Basis | Minimum | Impaired loans |  |
Disclosures about Fair Value Measurements and Financial Instruments |  |
Appraisal adjustments | 0.00% | 0.00%
Fair Value Measurements, Nonrecurring Basis | Maximum | Impaired loans |  |
Disclosures about Fair Value Measurements and Financial Instruments |  |
Appraisal adjustments | 100.00% | 100.00%
Fair Value Measurements, Nonrecurring Basis | Wgtd Ave | Impaired loans |  |
Disclosures about Fair Value Measurements and Financial Instruments |  |
Appraisal adjustments | 3.00% | 3.00%
Fair Value Measurements, Nonrecurring Basis | Level 3 | Impaired loans |  |
Disclosures about Fair Value Measurements and Financial Instruments |  |
Impaired loans | $ 258,000 | $ 258,000

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