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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - shares	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
ESOP shares committed to be released (in shares)	12,729	12,729	12,729	12,729	12,729	12,729

X

- Definition

The number of shares committed to be released under an Employee Stock Ownership Plan (ESOP).

+ References

No definition available.

+ Details

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Namespace Prefix:	pbfs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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