XML 12 R1.htm IDEA: XBRL DOCUMENT v3.22.2
Document And Entity Information - shares
3 Months Ended
Jun. 30, 2022
Aug. 05, 2022
Document Information [Line Items]    
Entity Central Index Key 0000768408  
Entity Registrant Name Cyanotech Corp  
Amendment Flag false  
Current Fiscal Year End Date --03-31  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2022  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2022  
Document Transition Report false  
Entity File Number 0-14602  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 91-1206026  
Entity Address, Address Line One 73-4460 Queen Kaahumanu Hwy. #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  
Title of 12(b) Security Common Stock, $0.02 par value per share  
Trading Symbol CYAN  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   6,207,482