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REAL ESTATE OWNED, NET REAL ESTATE OWNED, NET (Textual) (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Real Estate Owned [Line Items]        
Real Estate Owned $ 340,000 $ 816,000 $ 2,402,000 $ 814,000
Mortgage Loans in Process of Foreclosure, Amount 609,000      
One- to four-family residential [Member]        
Real Estate Owned [Line Items]        
Real Estate Owned $ 0