XML 40 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - shares
 6 Months Ended
Mar. 31, 2020
May 01, 2020
Document and Entity Information [Abstract]    
Entity Registrant Name Magyar Bancorp, Inc.  
Entity Central Index Key 0001337068  
Amendment Flag false  
Document Type 10-Q  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2020  
Document Period End Date Mar. 31, 2020  
Current Fiscal Year End Date --09-30  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   5,810,746
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code DE  
Entity File Number 000-51726  
Document Quarterly Report true  
Document Transition Report false