Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.20.1
Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Mar. 27, 2020
Jun. 30, 2019
Document Information [Line Items]      
Entity Registrant Name Rosehill Resources Inc.    
Central Index Key 0001659122    
Document Type 10-K    
Document Period-End Date Dec. 31, 2019    
Amendment Flag false    
Entity Ex Transition Period false    
Current Fiscal Year-End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Emerging Growth Company true    
Small Business true    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019    
Entity Shell Company false    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 39.9
Entity Current Reporting Status Yes    
Class A Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   28,811,078  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   15,707,692