Document And Entity Information - shares	3 Months Ended
	Jul. 31, 2017	Sep. 08, 2017
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Entity Registrant Name	AMREP CORP.
Entity Central Index Key	0000006207
Current Fiscal Year End Date	--04-30
Entity Filer Category	Smaller Reporting Company
Trading Symbol	AXR
Entity Common Stock, Shares Outstanding		8,089,204