XML 11 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Document and Entity Information - shares
 6 Months Ended
Dec. 31, 2020
Feb. 19, 2021
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Dec. 31, 2020  
Entity Registrant Name Pioneer Bancorp, Inc./MD  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Shell Company false  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   25,977,679
Current Fiscal Year End Date --06-30  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001769663  
Amendment Flag false  
Document Transition Report false  
Title of 12(b) Security Common Stock, par value $0.01  
Trading Symbol PBFS  
Security Exchange Name NASDAQ