v3.26.1
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Document Transition Report false  
Entity File Number 001-36829  
Entity Registrant Name Rocket Pharmaceuticals, Inc.  
Entity Central Index Key 0001281895  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 04-3475813  
Entity Address, Address Line One 9 Cedarbrook Drive  
Entity Address, City or Town Cranbury  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 08512  
City Area Code 609  
Local Phone Number 659-8001  
Title of 12(b) Security Common Stock, $0.01 par value per share  
Trading Symbol RCKT  
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   109,774,597