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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Current, Past Due, and Non-Accrual Loans by Categories of loans and Restructured Loans (Details) - USD ($) | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | $ 230,317,000 | $ 247,976,000 |  |
Non-accrual | 4,109,000 | 4,512,000 | $ 3,941,000 | $ 4,127,000
Total | 234,871,000 | 253,772,000 |  |
Allowance for loan loss | 2,887,000 | 1,476,000 |  | 2,066,000
Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due | 430,000 | 1,266,000 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
90 Days or More and Still Accruing | 15,000 | 18,000 |  |
Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 143,505,000 | 143,485,000 |  |
Non-accrual | 3,971,000 | 4,299,000 |  |
Total | 147,491,000 | 148,555,000 |  |
Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due |  | 753,000 |  |
Real Estate Loan | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
90 Days or More and Still Accruing | 15,000 | 18,000 |  |
Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 21,357,000 | 27,912,000 |  |
Total | 21,428,000 | 27,912,000 |  |
Commercial and Industrial | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due | 71,000 |  |  |
Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current |  | 76,579,000 |  |
Non-accrual |  | 213,000 |  |
Total | 65,952,000 | 77,305,000 |  |
Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due |  | 513,000 |  |
Construction and land | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 3,895,000 | 2,553,000 |  |
Total | 3,895,000 | 2,553,000 |  |
Allowance for loan loss | 42,000 | 9,000 |  | 24,000
Farmland | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 347,000 | 350,000 |  |
Total | 347,000 | 350,000 |  |
Allowance for loan loss | 10,000 | 2,000 |  | 2,000
Single-family residential | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 79,535,000 | 82,232,000 |  |
Non-accrual | 134,000 | 270,000 | 651,000 | 790,000
Total | 79,684,000 | 82,520,000 |  |
Allowance for loan loss | 1,239,000 | 513,000 |  | 849,000
Single-family residential | Real Estate Loan | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
90 Days or More and Still Accruing | 15,000 | 18,000 |  |
Multifamily | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 5,709,000 | 6,105,000 |  |
Non-accrual |  |  | 19,000 | 24,000
Total | 5,709,000 | 6,105,000 |  |
Allowance for loan loss | 98,000 | 39,000 |  | 40,000
Commercial | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 54,019,000 | 52,245,000 |  |
Non-accrual | 3,837,000 | 4,029,000 | 3,072,000 | 3,139,000
Total | 57,856,000 | 57,027,000 |  |
Allowance for loan loss | 441,000 | 218,000 |  | 241,000
Commercial | Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due |  | 753,000 |  |
Commercial | Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 65,455,000 |  |  |
Non-accrual | 138,000 |  |  |
Total | 65,952,000 |  |  |
Commercial | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due | 359,000 |  |  |
Commercial and industrial | Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 9,008,000 | 10,800,000 |  |
Total | 9,008,000 | 10,800,000 |  |
Allowance for loan loss | 162,000 | 67,000 |  | 69,000
SBA Guaranty | Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 7,112,000 | 7,200,000 |  |
Total | 7,183,000 | 7,200,000 |  |
Allowance for loan loss | 16,000 | 48,000 |  | 25,000
SBA Guaranty | Commercial and Industrial | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due | 71,000 |  |  |
Comm SBA PPP | Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 5,237,000 | 9,912,000 |  |
Total | 5,237,000 | 9,912,000 |  |
Consumer | Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 2,366,000 | 3,028,000 |  |
Non-accrual |  | 34,000 | 45,000 | 51,000
Total | 2,373,000 | 3,063,000 |  |
Allowance for loan loss | 72,000 | 11,000 |  | 11,000
Consumer | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due | 7,000 | 1,000 |  |
Automobile | Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current | 63,089,000 | 73,551,000 |  |
Non-accrual | 138,000 | 179,000 | $ 154,000 | 123,000
Total | 63,579,000 | 74,242,000 |  |
Allowance for loan loss | 807,000 | 569,000 |  | $ 805,000
Automobile | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past Due | $ 352,000 | $ 512,000 |  |

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