v3.25.2
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Jul. 18, 2025
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2025  
Securities Act File Number 1-16263  
Entity Registrant Name MARINE PRODUCTS CORPORATION  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 58-2572419  
Entity Address, Address Line One 2801 Buford Highway  
Entity Address, Address Line Two Suite 300  
Entity Address, City or Town Atlanta  
Entity Address, State or Province GA  
Entity Address, Postal Zip Code 30329  
City Area Code 404  
Local Phone Number 321-7910  
Title of 12(b) Security Common stock, par value $0.10  
Trading Symbol MPX  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   34,996,050
Entity Central Index Key 0001129155  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false