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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Impaired Financing Receivables (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | $ 25,000 | $ 26,000
Unpaid Principal Balance with specific reserves | 36,000 | 36,000
Interest Income Recognized with specific reserves | 1,000 | 2,000
Specific Reserve with specific reserves | 11,000 | 10,000
Average Recorded Investment | 49,000 | 49,000
Recorded Investment with no specific reserve | 166,000 | 301,000
Unpaid Principal Balance with no specific reserve | 166,000 | 301,000
Interest Income Recognized with no specific reserve | 2,000 | 12,000
Average Recorded Investment with no specific reserve | 189,000 | 350,000
Real Estate Loan |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | 25,000 | 26,000
Unpaid Principal Balance with specific reserves | 36,000 | 36,000
Interest Income Recognized with specific reserves | 1,000 | 2,000
Specific Reserve with specific reserves | 11,000 | 10,000
Average Recorded Investment | 49,000 | 49,000
Recorded Investment with no specific reserve | 46,000 | 87,000
Unpaid Principal Balance with no specific reserve | 46,000 | 87,000
Interest Income Recognized with no specific reserve | 0 | 3,000
Average Recorded Investment with no specific reserve | 51,000 | 98,000
Commercial and Industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve |  | 71,000
Unpaid Principal Balance with no specific reserve |  | 71,000
Interest Income Recognized with no specific reserve |  | 1,000
Average Recorded Investment with no specific reserve |  | 71,000
Consumer Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve | 120,000 | 143,000
Unpaid Principal Balance with no specific reserve | 120,000 | 143,000
Interest Income Recognized with no specific reserve | 2,000 | 8,000
Average Recorded Investment with no specific reserve | 138,000 | 181,000
Single-family | Real Estate Loan |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with specific reserves | 25,000 | 26,000
Unpaid Principal Balance with specific reserves | 36,000 | 36,000
Interest Income Recognized with specific reserves | 1,000 | 2,000
Specific Reserve with specific reserves | 11,000 | 10,000
Average Recorded Investment | 49,000 | 49,000
Recorded Investment with no specific reserve | 46,000 | 87,000
Unpaid Principal Balance with no specific reserve | 46,000 | 87,000
Interest Income Recognized with no specific reserve | 0 | 3,000
Average Recorded Investment with no specific reserve | 51,000 | 98,000
Single-family | Consumer Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Unpaid Principal Balance with specific reserves | 35,616 |
Specific Reserve | 10,954 |
SBA Guaranty | Commercial and Industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve |  | 71,000
Unpaid Principal Balance with no specific reserve |  | 71,000
Interest Income Recognized with no specific reserve |  | 1,000
Average Recorded Investment with no specific reserve |  | 71,000
Automobile | Consumer Loans |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment with no specific reserve | 120,000 | 143,000
Unpaid Principal Balance with no specific reserve | 120,000 | 143,000
Interest Income Recognized with no specific reserve | 2,000 | 8,000
Average Recorded Investment with no specific reserve | $ 138,000 | $ 181,000

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