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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Treasury Stock
Additional Paid-in-Capital
Retained Earnings (Deficit)
Non-controlling Interests
Beginning Balance at Dec. 31, 2015 $ 2,319,342 $ 1,376 $ (13,620) $ 1,497,065 $ 834,521  
Beginning Balance (shares) at Dec. 31, 2015   139,076 508      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock, net of offering costs 766,670 $ 943   765,727    
Issuance of common stock (shares)   94,300        
Equity-based compensation 25,771 $ 12   25,759    
Equity-based compensation (shares)   3,317        
Equity component of senior unsecured convertible notes, net 56,720     56,720    
Treasury stock - tax withholdings (2,330)   $ (2,330)      
Treasury stock - tax withholdings (shares)   349 349      
Net income (loss) (243,016)       (243,016)  
Beginning Balance at Dec. 31, 2016 2,923,157 $ 2,331 $ (15,950) 2,345,271 591,505  
Ending Balance (shares) at Dec. 31, 2016   236,344 857      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Fee (2016 issuance of common stock) and Other (2017 issuance of common stock and Oasis Midstream common units) (55)     (55)    
Issuance of common stock, net of offering costs 302,191 $ 320   301,871    
Issuance of common stock (shares)   32,000        
Equity-based compensation 28,160 $ 17   28,090   $ 53
Equity-based compensation (shares)   1,426        
Issuance of Oasis Midstream common units, net of offering costs 134,185     0   134,185
Treasury stock - tax withholdings (6,229)   $ (6,229)      
Treasury stock - tax withholdings (shares)   475 475      
Net income (loss) 127,446       123,796 3,650
Beginning Balance at Dec. 31, 2017 3,513,579 $ 2,668 $ (22,179) 2,677,217 717,985 137,888
Ending Balance (shares) at Dec. 31, 2017   269,295 1,332      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Permian Basin Acquisition issuance 371,220 $ 460   370,760    
Permian Basin Acquisition issuance (shares)   46,000        
Fee (2016 issuance of common stock) and Other (2017 issuance of common stock and Oasis Midstream common units) (1,006)     (881)   (125)
Equity-based compensation 31,044 $ 29   30,659   356
Equity-based compensation (shares)   3,842        
Issuance of Oasis Midstream common units, net of offering costs 44,503     0   44,503
Distributions to non-controlling interest owners (14,114)         (14,114)
Treasury stock - tax withholdings (6,846)   $ (6,846)     0
Treasury stock - tax withholdings (shares)   760 760      
Net income (loss) (19,500)       (35,296) 15,796
Beginning Balance at Dec. 31, 2018 $ 3,918,880 $ 3,157 $ (29,025) $ 3,077,755 $ 682,689 $ 184,304
Ending Balance (shares) at Dec. 31, 2018   318,377 2,092