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Loans, Collateral Dependent Loans and Loans With/Without Specific Valuation Allowance (Details) - Commercial [Member] $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 USD ($) Loan | Mar. 31, 2020 USD ($) Loan | Dec. 31, 2020 USD ($) Loan
Collateral Pledged [Member] |  |  |
Total loans [Abstract] |  |  |
Number of Loans | Loan | 22 | 31 | 22
Recorded balance | $ 63,551 | $ 54,702 | $ 63,574
Specific Allowance | $ 750 | $ 2,019 | $ 450
Hotel/Motel [Member] | Collateral Pledged [Member] |  |  |
Total loans [Abstract] |  |  |
Number of Loans | Loan | 6 | 3 | 5
Recorded balance | $ 34,174 | $ 14,712 | $ 26,194
Specific Allowance | $ 550 | $ 250 | $ 250
Commercial Real Estate Residential [Member] | Collateral Pledged [Member] |  |  |
Total loans [Abstract] |  |  |
Number of Loans | Loan | 5 | 7 | 4
Recorded balance | $ 8,679 | $ 5,125 | $ 7,833
Specific Allowance | $ 0 | $ 92 | $ 0
Commercial Real Estate Nonresidential [Member] | Collateral Pledged [Member] |  |  |
Total loans [Abstract] |  |  |
Number of Loans | Loan | 10 | 16 | 12
Recorded balance | $ 19,431 | $ 25,296 | $ 24,497
Specific Allowance | $ 200 | $ 720 | $ 200
Commercial Other [Member] | Collateral Pledged [Member] |  |  |
Total loans [Abstract] |  |  |
Number of Loans | Loan | 1 | 5 | 1
Recorded balance | $ 1,267 | $ 9,569 | $ 5,050
Specific Allowance | $ 0 | 957 | 0
Commercial Other [Member] | Collateral Pledged by Leasehold Mortgage [Member] |  |  |
Total loans [Abstract] |  |  |
Recorded balance |  | 5,100 | $ 5,100
Commercial Other [Member] | Collateral Pledged by Underground Coal Mining Equipment and Junior Real Estate Liens [Member] |  |  |
Total loans [Abstract] |  |  |
Recorded balance |  | 4,100 |
Commercial Other [Member] | Collateralized by Commercial Real Estate and Liens on Furniture, Fixtures, and Equipment [Member] |  |  |
Total loans [Abstract] |  |  |
Recorded balance |  | $ 400 |

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524 + Details
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