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INVESTMENT SECURITIES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of available for sale securities	$ 0	$ 0
Federal Reserve Bank
Debt Securities, Available-for-sale [Line Items]
Borrowings outstanding under line of credit facility	0		$ 0
Mortgage-backed securities | MPF Credit Enhancement Fee
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	122,000		142,000
Mortgage-backed securities | Asset Pledged as Collateral | Federal Reserve Bank
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	30,396,000		5,421,000
Mortgage-backed securities | Asset Pledged as Collateral | Specific Municipal Deposits
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	2,116,000		2,219,000
U.S. government agency obligations | Asset Pledged as Collateral | Specific Municipal Deposits
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	$ 2,224,000		$ 2,602,000

X

- Definition

Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 210
-Section 45
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=120413173&loc=SL6242262-115580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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-Section 50
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X

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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