EMPLOYEE BENEFIT PLANS - Additional Information (Details) - USD ($)	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023
Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares per year	255,648
ESOP loan balance	$ 2,500,000
Debt Instrument, Term	25 years
Pentegra DB Plan [Member]
Defined benefit plan, Service cost	$ 195,000	$ 195,000
Defined benefit plan, Contributions by employer	$ 0	0
FourHundredAndOne K Plan [Member]
Defined contribution plan, Employer matching contribution, Percent of employees gross pay	3.00%
Defined contribution plan, Employer discretionary contribution amount	$ 6,000	6,000
FourHundredAndOne K Plan [Member] \| Maximum [Member]
Defined contribution plan, Voluntary contributions by Employees, Percent	15.00%
Defined contribution plan, Employer matching contribution, Percent of match	10.00%
FourHundredAndOne K Plan [Member] \| Minimum [Member]
Defined contribution plan, Voluntary contributions by Employees, Percent	2.00%
Supplemental Employee Retirement Plan [Member]
Liability, Defined benefit plan	$ 893,000		$ 877,000
Pension and other postretirement benefits, Expenses	16,000	16,000
Postretirement Life Insurance [Member] \| Split Dollar Agreements [Member]
Pension and other postretirement benefits, Expenses	19,000	$ 29,000
Cash surrender value of life insurance	4,500,000		4,500,000
Postretirement Life Insurance In Connection With SERPs [Member]
Cash surrender value of life insurance	$ 6,000,000		$ 5,900,000
Tax-Qualified Retirement Plan [Member]
Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares per year	10,226

Defined contribution plan, voluntary contributions by employees, percent.

No definition available.

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

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- Definition

The amount reported as a liability as of the balance sheet date by the entity (the employer) of the loan made by a third-party lender directly to the ESOP.

+ References

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 25
-Paragraph 9
-Subparagraph (a)
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- Definition

The shares that, although not legally released, will be released by a future scheduled and committed debt service payment and will be allocated to employees for service rendered in the current accounting period. The ESOP documents typically define the period of service to which the shares relate. ESOP shares are released to compensate employees directly, to settle employer liabilities for other employee benefits, and to replace dividends on allocated shares that are used for debt service.

+ References

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- Definition

Amount of cost (reversal of cost) for pension and other postretirement benefits.

+ References

No definition available.

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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.

+ References

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-Topic 942
-SubTopic 210
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-Section S99
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