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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) (unaudited) - shares | 3 Months Ended
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Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) |  |  |  |
ESOP shares committed to be released (in shares) | 12,729 | 12,729 | 12,729 | 12,729

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- Definition The number of shares committed to be released under an Employee Stock Ownership Plan (ESOP). + References No definition available. + Details
Name: | pbfs_EmployeeStockOwnershipPlanSharesCommittedToBeReleased
Namespace Prefix: | pbfs_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration