XML 17 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Mar. 24, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Document Transition Report false    
Entity File Number 001-37670    
Entity Registrant Name Lonestar Resources US Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 81-0874035    
Entity Address, Address Line One 111 Boland Street    
Entity Address, Address Line Two Suite 301    
Entity Address, City or Town Fort Worth    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 76107    
City Area Code 817    
Local Phone Number 921-1889    
Title of 12(b) Security Common Stock,par value $0.001    
Trading Symbol LONE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
Entity Ex Transition Period false    
Entity Shell Company false    
ICFR Auditor Attestation Flag false    
Entity Public Float     $ 9.5
Entity Common Stock, Shares Outstanding   10,000,149  
Amendment Flag false    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001661920    
Current Fiscal Year End Date --12-31    
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the definitive proxy statement relating to the Registrant’s 2021 Annual Meeting of Shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K.