v3.26.1
Cover
May 12, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date May 12, 2026
Entity File Number 001-37649
Entity Registrant Name FiEE, Inc.
Entity Central Index Key 0001467761
Entity Tax Identification Number 04-2621506
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 3-33
Entity Address, Address Line Two 2-chome Utajima
Entity Address, Address Line Three Nishiyodogawa District
Entity Address, City or Town Osaka
Entity Address, Country JP
Entity Address, Postal Zip Code 00000
City Area Code 852
Local Phone Number 28166813
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.01 par value per share
Trading Symbol FIEE
Security Exchange Name NASDAQ
Entity Emerging Growth Company false