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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | ---
Jan. 01, 2020 USD ($) | Mar. 31, 2020 USD ($) subsidary Family Residentialhouse | Mar. 31, 2020 USD ($) subsidary Family Residentialhouse | Dec. 31, 2019 USD ($) | Mar. 31, 2019 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of subsidiaries | subsidary |  | 6 | 6 |  |
Provision for loan losses |  |  | $ 1,400,000 | $ 0 | $ 575,000
Provision for loan losses due to Covid-19 |  |  | 913,000 |  |
Decrease to retained earnings |  |  | (3,593,000) |  |
Retained earnings, net of tax |  |  | $ 955,000 |  |
Number of families secured by loans of real estate | Family |  | 4 | 4 |  |
Number of housing units secured by loans from segment | Residentialhouse |  | 5 | 5 |  |
Paycheck Protection Program Loans |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Percentage of government guaranteed loans |  | 100.00% | 100.00% |  |
Accounting Standards Update 2016-13 |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Increase to allowance for credit losses | $ 4,548,000 |  |  |  |
Increase to allowance for credit losses, percent | 28.10% |  |  |  |
Provision for loan losses |  |  | $ 1,400,000 |  |
Provision for loan losses due to Covid-19 |  | $ 900,000 |  |  |
Decrease to retained earnings |  |  | (4,548,000) |  |
Retained earnings, net of tax |  |  | $ 955,000 |  |
Accounting Standards Update 2016-13 | CECL |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Provision for loan losses due to Covid-19 |  | $ 500,000 |  |  |

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