CONSOLIDATED STATEMENTS OF CHANGES IN NET WORTH AND SHAREHOLDERS' EQUITY (Parenthetical)	12 Months Ended
Jun. 30, 2020 shares
CONSOLIDATED STATEMENTS OF CHANGES IN NET WORTH AND SHAREHOLDERS’ EQUITY
Purchase of common stock by ESOP (in shares)	(1,018,325)
ESOP shares committed to be released (in shares)	(76,374)

The number of shares of common stock purchased by the Employee Stock Ownership Plan (ESOP).

No definition available.

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