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Document And Entity Information - USD ($)
 12 Months Ended
Apr. 30, 2024
Oct. 31, 2024
Jul. 19, 2024
Document And Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Apr. 30, 2024    
Document Transition Report false    
Entity File Number 1-4702    
Entity Registrant Name AMREP CORP.    
Entity Incorporation, State or Country Code OK    
Entity Tax Identification Number 59-0936128    
Entity Address, Address Line One 850 West Chester Pike, Suite 205    
Entity Address, City or Town Havertown    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 19083    
City Area Code 610    
Local Phone Number 487-0905    
Title of 12(b) Security Common Stock $0.10 par value    
Trading Symbol AXR    
Security Exchange Name NYSE    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding     5,287,449
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Public Float   $ 63,005,568  
Document Financial Statement Error Correction [Flag] false    
ICFR Auditor Attestation Flag false    
Auditor Name Baker Tilly US, LLP    
Auditor Firm ID 23    
Auditor Location Philadelphia, Pennsylvania    
Entity Central Index Key 0000006207    
Current Fiscal Year End Date --04-30    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false