Document and Entity Information	6 Months Ended
	Apr. 30, 2012	Jun. 11, 2012
Document And Entity Information
Entity Registrant Name	FIRST REAL ESTATE INVESTMENT TRUST OF NEW JERSEY
Entity Central Index Key	0000036840
Document Type	10-Q
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Document Period End Date	Apr. 30, 2012
Amendment Flag	false
Current Fiscal Year End Date	--10-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		6,942,143