Document And Entity Information - shares	6 Months Ended
	Oct. 31, 2018	Dec. 07, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Registrant Name	AMREP CORP.
Entity Central Index Key	0000006207
Current Fiscal Year End Date	--04-30
Entity Filer Category	Non-accelerated Filer
Trading Symbol	AXR
Entity Common Stock, Shares Outstanding		8,127,904
Entity Emerging Growth Company	false
Entity Small Business	true