Annual report pursuant to Section 13 and 15(d)


$ in Millions
12 Months Ended
Dec. 31, 2019
Mar. 10, 2020
Jun. 28, 2019
Cover [Abstract]      
Document Type 10-K/A    
Document Fiscal Period Focus FY    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Amendment Flag true    
Amendment Description Correction of Item 6. Selected Financial Data for 2017, 2016 and 2015    
Document Fiscal Year Focus 2019    
Current Fiscal Year End Date --12-31    
Entity File Number 001-33999    
Entity Registrant Name NORTHERN OIL AND GAS, INC.    
Entity Central Index Key 0001104485    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 95-3848122    
Entity Address, Address Line One 601 Carlson Pkwy – Suite 990    
Entity Address, City or Town Minnetonka    
Entity Address, State or Province MN    
Entity Address, Postal Zip Code 55305    
City Area Code 952    
Local Phone Number 476-9800    
Title of 12(b) Security Common Stock, $0.001 par value    
Trading Symbol NOG    
Security Exchange Name NYSEAMER    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 547.5
Entity Common Stock, Shares Outstanding   406,021,004  
Documents Incorporated by Reference No documents are incorporated by reference.