INVESTMENT SECURITIES - Other (Details)	12 Months Ended
Jun. 30, 2023 USD ($) security	Dec. 31, 2024 security	Jun. 30, 2024 security
INVESTMENT SECURITIES
Number of securities in unrealized loss position \| security	165	52	104
Non-investment grade
INVESTMENT SECURITIES
Additional impairment charges	$ 0
Number of securities evaluated for impairment \| security	54
Debt securities evaluated for impairment, amortized cost	$ 219,000
Debt securities evaluated for impairment, par value	$ 1,500,000

Amount of additional impairment loss on debt securities.

No definition available.

Name:	pbfs_DebtSecuritiesAdditionalImpairmentCharges
Namespace Prefix:	pbfs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amortized cost of debt securities that were evaluated for impairment.

+ References

No definition available.

+ Details

Name:	pbfs_DebtSecuritiesEvaluatedForImpairmentAmortizedCost
Namespace Prefix:	pbfs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The par value of debt securities that were evaluated for impairment.

+ References

No definition available.

+ Details

Name:	pbfs_DebtSecuritiesEvaluatedForImpairmentParValue
Namespace Prefix:	pbfs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of securities evaluated for impairment.

+ References

No definition available.

+ Details

Name:	pbfs_NumberOfSecuritiesEvaluatedForImpairment
Namespace Prefix:	pbfs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-4

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_MarketableSecuritiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ExternalCreditRatingByGroupingAxis=us-gaap_ExternalCreditRatingNonInvestmentGradeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: