LOANS RECEIVABLE - Current, Past Due and Nonaccrual Loans (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total loans	$ 133,624,000	$ 131,842,000
Past due
Financing Receivable, Past Due [Line Items]
Total loans	2,653,000	2,816,000
Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	1,844,000	2,343,000
Past Due Over 90 Days and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	41,000	1,000
Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	768,000	472,000
Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	130,493,000	128,608,000
Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	478,000	418,000
Real Estate
Financing Receivable, Past Due [Line Items]
Total loans	118,210,000	119,083,000
One- to four-family residential
Financing Receivable, Past Due [Line Items]
Total loans	89,531,000	87,303,000
One- to four-family residential | Past due
Financing Receivable, Past Due [Line Items]
Total loans	2,303,000	2,527,000
One- to four-family residential | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	1,571,000	2,116,000
One- to four-family residential | Past Due Over 90 Days and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	41,000
One- to four-family residential | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	691,000	411,000
One- to four-family residential | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	86,787,000	84,396,000
One- to four-family residential | Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	441,000	380,000
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total loans	21,521,000	23,112,000
Commercial real estate | Past due
Financing Receivable, Past Due [Line Items]
Total loans	227,000	133,000
Commercial real estate | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	176,000	133,000
Commercial real estate | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	51,000
Commercial real estate | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	21,294,000	22,979,000
Construction & land
Financing Receivable, Past Due [Line Items]
Total loans	3,843,000	4,079,000
Construction & land | Past due
Financing Receivable, Past Due [Line Items]
Total loans	26,000	93,000
Construction & land | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans		62,000
Construction & land | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	26,000	31,000
Construction & land | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	3,780,000	3,949,000
Construction & land | Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	37,000	37,000
Multi-family residential
Financing Receivable, Past Due [Line Items]
Total loans	3,315,000	4,589,000
Multi-family residential | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	3,315,000	4,589,000
Consumer
Financing Receivable, Past Due [Line Items]
Total loans	4,004,000	4,385,000
Consumer | Past due
Financing Receivable, Past Due [Line Items]
Total loans	36,000	46,000
Consumer | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	36,000	32,000
Consumer | Past Due Over 90 Days and Accruing
Financing Receivable, Past Due [Line Items]
Total loans		1,000
Consumer | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans		13,000
Consumer | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	3,968,000	4,339,000
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans	11,410,000	8,374,000
Commercial and industrial | Past due
Financing Receivable, Past Due [Line Items]
Total loans	61,000	17,000
Commercial and industrial | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	61,000
Commercial and industrial | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans		17,000
Commercial and industrial | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	11,349,000	8,356,000
Commercial and industrial | Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans		1,000
Residential real estate
Financing Receivable, Past Due [Line Items]
Total loans	115,000	47,000
Consumer
Financing Receivable, Past Due [Line Items]
Total loans	4,004,000	4,385,000
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans	$ 11,410,000	$ 8,374,000