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