v3.26.1
Cover - shares
6 Months Ended
Sep. 30, 2025
Jun. 23, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2025  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --03-31  
Entity File Number 000-56380  
Entity Registrant Name ZRCN INC.  
Entity Central Index Key 0001901297  
Entity Tax Identification Number 83-2756695  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 1580 Dell Avenue  
Entity Address, City or Town Campbell  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 95008  
City Area Code (408)  
Local Phone Number 963-4550  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   10,359,924
Entity Information, Former Legal or Registered Name Not applicable