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Cover
Mar. 21, 2024
Cover [Abstract]  
Document Type 8-K
Document Period End Date Mar. 25, 2025
Entity Incorporation, State or Country Code DE
Entity File Number 001-36583
Entity Tax Identification Number 94-3021850
Entity Address, Address Line One 32000 Aurora Road Suite B
Entity Address, State or Province OH
Entity Address, Postal Zip Code 44139
City Area Code 440
Local Phone Number 715-1300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol EFOI
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0000924168
Amendment Flag false
Entity Addresses [Line Items]  
Entity Address, Address Line One 32000 Aurora Road Suite B
Entity Address, Postal Zip Code 44139
Entity Address, State or Province OH
Entity Address, City or Town Solon,
Document Period End Date Mar. 25, 2025
Entity Registrant Name ENERGY FOCUS, INC/DE