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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Credit Quality Information (Details) | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) loan | Jun. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | $ 234,871,000 | $ 253,772,000 |  |
Non-accrual | 4,109,000 | 4,512,000 | $ 3,941,000 | $ 4,127,000
Troubled debt restructures | $ 37,000 | $ 39,000 |  |
Number of TDRs accounts | 1,000 | 1 |  |
Non-performing TDRs |  | 39,000 |  |
Number of non-performing TDRs accounts | 1,000 | 1 |  |
Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | $ 230,761,000 | $ 248,858,000 |  |
Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 4,044,000 | 4,798,000 |  |
Doubtful |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 66,000 | 116,000 |  |
Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 147,491,000 | 148,555,000 |  |
Non-accrual | 3,971,000 | 4,299,000 |  |
Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 21,428,000 | 27,912,000 |  |
Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 65,952,000 | 77,305,000 |  |
Non-accrual |  | 213,000 |  |
Construction and land | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 3,895,000 | 2,553,000 |  |
Construction and land | Real Estate Loan | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 3,895,000 | 2,553,000 |  |
Farmland | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 347,000 | 350,000 |  |
Farmland | Real Estate Loan | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 347,000 | 350,000 |  |
Single-family residential | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 79,684,000 | 82,520,000 |  |
Non-accrual | 134,000 | 270,000 | 651,000 | 790,000
Troubled debt restructures | $ 37,000 | $ 39,000 |  |
Number of TDRs accounts | 1,000 | 1 |  |
Non-performing TDRs | 37,000 | 39,000 |  |
Number of non-performing TDRs accounts | 1,000 | 1 |  |
Single-family residential | Real Estate Loan | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | $ 79,550,000 | $ 82,310,000 |  |
Single-family residential | Real Estate Loan | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 134,000 | 210,000 |  |
Multifamily | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 5,709,000 | 6,105,000 |  |
Non-accrual |  |  | 19,000 | 24,000
Multifamily | Real Estate Loan | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 5,709,000 | 6,105,000 |  |
Commercial | Real Estate Loan |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 57,856,000 | 57,027,000 |  |
Non-accrual | 3,837,000 | 4,029,000 | 3,072,000 | 3,139,000
Commercial | Real Estate Loan | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 54,019,000 | 52,534,000 |  |
Commercial | Real Estate Loan | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 3,837,000 | 4,493,000 |  |
Commercial | Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 65,952,000 |  |  |
Non-accrual | 138,000 |  |  |
Commercial and industrial | Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 9,008,000 | 10,800,000 |  |
Commercial and industrial | Commercial and Industrial | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 9,008,000 | 10,800,000 |  |
SBA Guaranty | Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 7,183,000 | 7,200,000 |  |
SBA Guaranty | Commercial and Industrial | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 7,183,000 | 7,200,000 |  |
Comm SBA PPP | Commercial and Industrial |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 5,237,000 | 9,912,000 |  |
Comm SBA PPP | Commercial and Industrial | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 5,237,000 | 9,912,000 |  |
Consumer | Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 2,373,000 | 3,063,000 |  |
Non-accrual |  | $ 34,000 | 45,000 | 51,000
Non-performing TDRs |  | 39,000 |  |
Number of non-performing TDRs accounts | loan |  | 1 |  |
Consumer | Consumer Loans | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 2,373,000 | $ 3,030,000 |  |
Consumer | Consumer Loans | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans |  | 33,000 |  |
Automobile | Consumer Loans |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 63,579,000 | 74,242,000 |  |
Non-accrual | 138,000 | 179,000 | $ 154,000 | $ 123,000
Automobile | Consumer Loans | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 63,440,000 | 74,064,000 |  |
Automobile | Consumer Loans | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | 73,000 | 62,000 |  |
Automobile | Consumer Loans | Doubtful |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total loans | $ 66,000 | $ 116,000 |  |

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