LOANS RECEIVABLE - Current, Past Due and Nonaccrual Loans (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total loans	$ 133,607,000	$ 132,103,000
Past due
Financing Receivable, Past Due [Line Items]
Total loans	3,381,000	2,816,000
Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	2,405,000	2,343,000
Past Due Over 90 Days and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	191,000	1,000
Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	785,000	472,000
Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	129,517,000	128,869,000
Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	709,000	418,000
Real Estate
Financing Receivable, Past Due [Line Items]
Total loans	116,317,000	119,344,000
One- to four-family residential
Financing Receivable, Past Due [Line Items]
Total loans	87,508,000	87,564,000
One- to four-family residential | Past due
Financing Receivable, Past Due [Line Items]
Total loans	2,984,000	2,527,000
One- to four-family residential | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	2,077,000	2,116,000
One- to four-family residential | Past Due Over 90 Days and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	191,000
One- to four-family residential | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	716,000	411,000
One- to four-family residential | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	83,848,000	84,657,000
One- to four-family residential | Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	676,000	380,000
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total loans	19,437,000	23,112,000
Commercial real estate | Past due
Financing Receivable, Past Due [Line Items]
Total loans	217,000	133,000
Commercial real estate | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	166,000	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	19,220,000	22,979,000
Construction & land
Financing Receivable, Past Due [Line Items]
Total loans	6,172,000	4,079,000
Construction & land | Past due
Financing Receivable, Past Due [Line Items]
Total loans	174,000	93,000
Construction & land | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	156,000	62,000
Construction & land | Past Due Over 30 Days Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	18,000	31,000
Construction & land | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	5,965,000	3,949,000
Construction & land | Current and Non-Accruing
Financing Receivable, Past Due [Line Items]
Total loans	33,000	37,000
Multi-family residential
Financing Receivable, Past Due [Line Items]
Total loans	3,200,000	4,589,000
Multi-family residential | Current and Accruing
Financing Receivable, Past Due [Line Items]
Total loans	3,200,000	4,589,000
Consumer
Financing Receivable, Past Due [Line Items]
Total loans	3,447,000	4,385,000
Consumer | Past due
Financing Receivable, Past Due [Line Items]
Total loans	6,000	46,000
Consumer | Past Due 30-89 Days Accruing
Financing Receivable, Past Due [Line Items]
Total loans	6,000	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	3,441,000	4,339,000
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans	13,843,000	8,374,000
Commercial and industrial | Past due
Financing Receivable, Past Due [Line Items]
Total loans		17,000
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	13,843,000	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	331,000	47,000
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total loans	50,000
Consumer
Financing Receivable, Past Due [Line Items]
Total loans	3,447,000	4,385,000
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans	$ 13,843,000	$ 8,374,000