XML 12 R1.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Cover - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2024
Aug. 26, 2024
Oct. 31, 2023
Document Type 10-K/A    
Amendment Flag true    
Amendment Description This Amendment No. 1 to Form 10-K (this Amendment No.1) amends the Ocean Power Technologies, Inc. (“we”, “us”, “our” or the “Company”) Annual Report on Form 10-K for the fiscal year ending April 30, 2024, as originally filed with the Securities and Exchange Commission (“SEC”) on July 25, 2024 (the “Original Filing”). We are filing this Amendment No. 1 to include the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from our Original Filing in reliance on General Instruction G(3) to Form 10-K, which permits the information in the above-referenced items to be incorporated in our Form 10-K by reference to our definitive proxy statement if such statement is filed within 120 days after the end of our fiscal year ended April 30, 2024    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Apr. 30, 2024    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2024    
Current Fiscal Year End Date --04-30    
Entity File Number 001-33417    
Entity Registrant Name Ocean Power Technologies, Inc.    
Entity Central Index Key 0001378140    
Entity Tax Identification Number 22-2535818    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 28 ENGELHARD DRIVE    
Entity Address, Address Line Two SUITE B    
Entity Address, City or Town MONROE TOWNSHIP    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 08831    
City Area Code (609)    
Local Phone Number 730-0400    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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 Public Float     $ 17.6
Entity Common Stock, Shares Outstanding   95,573,789  
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Firm ID 274    
Auditor Name EisnerAmper LLP    
Auditor Location Iselin, New Jersey    
Common Stock Par Value 0.001 [Member]      
Title of 12(b) Security Common Stock, par value $0.001    
Trading Symbol OPTT    
Security Exchange Name NYSE    
Series A Preferred Stock Purchase Rights      
Title of 12(b) Security Series A Participating Preferred Stock Purchase Rights    
No Trading Symbol Flag true    
Security Exchange Name NYSE