Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Phantom Unit Awards (Details)

v3.19.3.a.u2
Equity-Based Compensation - Phantom Unit Awards (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 2 Months Ended 10 Months Ended 12 Months Ended
Jan. 31, 2020
Mar. 12, 2019
Dec. 31, 2019
Dec. 31, 2019
Number of units        
Granted (in shares) 4,644,934      
Vested (in shares)       (730,343)
Weighted average grant date fair value        
Vested (in dollars per share)       $ 27.60
Aggregate intrinsic value        
Outstanding at the beginning of the period $ 4,992 $ 12,470 $ 13,476 $ 12,470
Outstanding at the end of the period   $ 13,476 $ 4,992 $ 4,992
Antero Midstream Partners Phantom Unit Awards        
Number of units        
Total awarded and unvested at the beginning of the period (in shares) 657,757 583,000 564,781 583,000
Granted (in shares)   5,972    
Effect of conversion     504,119  
Vested (in shares)   (3,853) (362,191)  
Forfeited (in shares)   (20,338) (48,952)  
Total awarded and unvested at the end of the period (in shares)   564,781 657,757 657,757
Weighted average grant date fair value        
Total awarded and unvested at the beginning of the period (in dollars per share) $ 14.71 $ 27.63 $ 27.59 $ 27.63
Granted (in dollars per share)   23.44    
Effect of conversion (in dollars per share)     14.58  
Vested (in dollars per share)   32.44 14.35  
Forfeited (in dollars per share)   26.73 14.51  
Total awarded and unvested at the end of the period (in dollars per share)   $ 27.59 $ 14.71 $ 14.71
Aggregate intrinsic value        
Additional equity compensation to be recognized over the remaining period     $ 6,000 $ 6,000
Weighted average period for recognizing unrecognized stock-based compensation expense       1 year 8 months 12 days
Antero Midstream Corporation | Midstream Plan        
Aggregate intrinsic value        
Conversion rate of units converted into restricted stock       1.8926