v3.25.2
Document And Entity Information
Aug. 29, 2025
Document Information [Line Items]  
Entity, Registrant Name Cyanotech Corporation
Document, Type 8-K
Document, Period End Date Aug. 29, 2025
Entity, Incorporation, State or Country Code NV
Entity, File Number 000-14602
Entity, Tax Identification Number 91-1206026
Entity, Address, Address Line One 73-4460 Queen Kaahumanu Highway
Entity, Address, Address Line Two Suite #102
Entity, Address, City or Town Kailua Kona
Entity, Address, State or Province HI
Entity, Address, Postal Zip Code 96740
City Area Code 808
Local Phone Number 326-1353
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0000768408