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Document And Entity Information - USD ($)
 12 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Jul. 21, 2025
Oct. 31, 2024
Document And Entity Information        
Document Type 10-K      
Document Annual Report true      
Document Period End Date Apr. 30, 2025      
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     5,305,949  
Entity Well-known Seasoned Issuer No      
Entity Voluntary Filers No      
Entity Public Float       $ 115,727,395
Document Financial Statement Error Correction [Flag] false      
ICFR Auditor Attestation Flag false      
Auditor Name Rosenberg Rich Baker Berman, P.A Baker Tilly US, LLP    
Auditor Firm ID 89 23    
Auditor Location Somerset, New Jersey Philadelphia, Pennsylvania    
Entity Central Index Key 0000006207      
Current Fiscal Year End Date --04-30      
Document Fiscal Year Focus 2025      
Document Fiscal Period Focus FY      
Amendment Flag false