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LOANS RECEIVABLE - Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment Without an Allowance | $ 1,191 | $ 2,889
Recorded Investment With an Allowance | 1,130 | 1,114
Unpaid Principal Balance | 3,193 | 4,844
Related Allowance | 336 | 599
Average Recorded Investment | 2,424 | 4,076
Interest Income Recognized | 69 | 145
One- to four-family residential |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment Without an Allowance | 1,153 | 1,640
Recorded Investment With an Allowance | 1,113 | 1,114
Unpaid Principal Balance | 3,128 | 3,586
Related Allowance | 319 | 599
Average Recorded Investment | 2,365 | 2,824
Interest Income Recognized | 67 | 88
Construction & land |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment Without an Allowance | 37 | 41
Unpaid Principal Balance | 44 | 46
Average Recorded Investment | 39 | 43
Multi-family residential |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment Without an Allowance |  | 1,205
Unpaid Principal Balance |  | 1,205
Average Recorded Investment |  | 1,205
Interest Income Recognized |  | 57
Commercial and industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment Without an Allowance | 1 |
Recorded Investment With an Allowance | 17 |
Unpaid Principal Balance | 21 |
Related Allowance | 17 |
Average Recorded Investment | 20 |
Interest Income Recognized | $ 2 |
Commercial and industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment Without an Allowance |  | 3
Unpaid Principal Balance |  | 7
Average Recorded Investment |  | $ 4

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