v3.26.1
Document and Entity Information
Aug. 07, 2026
Aug. 06, 2026
Document Information [Line Items]    
Document Type 8-K  
Amendment Flag false  
Document Period End Date   Aug. 06, 2026
Entity Registrant Name ORION ENERGY SYSTEMS, INC.  
Entity Central Index Key 0001409375  
Entity Incorporation, State or Country Code WI  
Entity File Number 01-33887  
Entity Tax Identification Number 39-1847269  
Entity Address, Address Line One 2210 Woodland Drive  
Entity Address, City or Town Manitowoc  
Entity Address, State or Province WI  
Entity Address, Postal Zip Code 54220  
City Area Code 920  
Local Phone Number 892-9340  
Written Communications false  
Soliciting Material false  
Pre-commencement Tender Offer false  
Pre-commencement Issuer Tender Offer false  
Security12b Title Common stock, no par value  
Trading Symbol OESX  
Security Exchange Name NASDAQ  
Entity Emerging Growth Company false