v3.26.1
Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2026
May 13, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-38634  
Entity Registrant Name Reviva Pharmaceuticals Holdings, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-4306526  
Entity Address, Address Line One 10080 N. Wolfe Road, Suite SW3-200  
Entity Address, City or Town Cupertino  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 95014  
City Area Code 408  
Local Phone Number 501-8881  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol RVPH  
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 (in shares)   13,110,377
Entity Central Index Key 0001742927  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false