Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation - Phantom Unit Awards (Details)

v3.19.1
Equity-Based Compensation - Phantom Unit Awards (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended
Mar. 31, 2019
Mar. 12, 2019
Mar. 31, 2019
Antero Midstream Partners Phantom Unit Awards      
Number of units      
Total awarded and unvested at the beginning of the period (in shares) 564,781 583,000 583,000
Granted (in shares)   5,972  
Vested (in shares)   (3,853)  
Forfeited (in shares)   (20,338)  
Effect of conversion 504,119    
Total awarded and unvested at the end of the period (in shares) 1,068,900 564,781 1,068,900
Weighted average grant date fair value      
Total awarded and unvested at the beginning of the period (in dollars per share) $ 27.59 $ 27.63 $ 27.63
Granted (in dollars per share)   23.44  
Vested (in dollars per share)   32.44  
Forfeited (in dollars per share)   26.73  
Effect of conversion (in dollars per share) 14.58   14.58
Total awarded and unvested at the end of the period (in dollars per share) $ 14.58 $ 27.59 $ 14.58
Aggregate intrinsic value      
Outstanding at the beginning of the period $ 13,476 $ 12,470 $ 12,470
Outstanding at the end of the period 14,729 $ 13,476 14,729
Additional equity compensation to be recognized over the remaining period $ 11,000   $ 11,000
Weighted average period for recognizing unrecognized stock-based compensation expense     2 years 3 months 11 days
Restricted stock and restricted stock unit      
Number of units      
Total awarded and unvested at the beginning of the period (in shares)   1,712,485 1,712,485
Granted (in shares)     66,171
Vested (in shares)     (125,973)
Forfeited (in shares)     (53,902)
Total awarded and unvested at the end of the period (in shares) 1,598,781   1,598,781
Weighted average grant date fair value      
Total awarded and unvested at the beginning of the period (in dollars per share)   $ 24.57 $ 24.57
Granted (in dollars per share)     10.94
Vested (in dollars per share)     26.88
Forfeited (in dollars per share)     23.62
Total awarded and unvested at the end of the period (in dollars per share) $ 23.86   $ 23.86
Aggregate intrinsic value      
Outstanding at the beginning of the period   $ 16,080 $ 16,080
Outstanding at the end of the period $ 14,117   14,117
Additional equity compensation to be recognized over the remaining period $ 22,000   $ 22,000
Weighted average period for recognizing unrecognized stock-based compensation expense     2 years 3 months 18 days
Antero Midstream Corporation | Midstream Plan      
Aggregate intrinsic value      
Conversion rate of units converted into restricted stock     1.8926