Quarterly report pursuant to Section 13 or 15(d)

Equity Based Compensation and Cash Awards (Details)

v3.22.2.2
Equity Based Compensation and Cash Awards (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 19, 2019
Apr. 30, 2022
Jul. 31, 2020
Jan. 31, 2020
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2019
Dec. 31, 2021
Mar. 12, 2019
Common Stock                              
Number of units                              
Issuance of common stock upon conversion of performance share units (in shares)         25,000 754,000 188,000 102,000 451,000 268,000          
AR LTIP                              
Additional disclosures                              
Equity based compensation expense allocated from Antero Resources         $ 0.1     $ 0.3     $ 0.4 $ 1.8      
Unamortized expense allocated from Antero Resources         $ 0.1           $ 0.1        
AM LTIP                              
Additional disclosures                              
Number of stock-based compensation awards authorized                             15,398,901
Number of shares available for future grant under the Plan         7,410,734           7,410,734        
Cash awards granted     $ 0.7 $ 2.2                      
Vesting period for cash awards     4 years 3 years                      
Cash awards accrued in other liabilities         $ 0.5           $ 0.5     $ 1.1  
AM LTIP RSUs                              
Number of units                              
Total awarded and unvested at the beginning of the period (in shares)             3,573,377       3,573,377        
Granted (in shares)                     2,750,896        
Vested (in shares)                     (1,243,878)        
Forfeited (in shares)                     (159,119)        
Total awarded and unvested at the end of the period (in shares)         4,921,276           4,921,276        
Weighted average grant date fair value                              
Total awarded and unvested at the beginning of the period (in dollars per unit)             $ 8.11       $ 8.11        
Granted (in dollars per unit)                     11.28        
Vested (in dollars per unit)                     8.40        
Forfeited (in dollars per unit)                     9.37        
Total awarded and unvested at the end of the period (in dollars per unit)         $ 9.77           $ 9.77        
Additional disclosures                              
Unamortized expense         $ 39.2           $ 39.2        
Shares exchange ratio 1.8926                            
Weighted average period for recognizing unrecognized stock-based compensation expense                     2 years 4 months 24 days        
Converted AM RSU Awards | Maximum                              
Additional disclosures                              
Unamortized expense         $ 0.1           $ 0.1        
ROIC PSUs                              
Number of units                              
Total awarded and unvested at the beginning of the period (in shares)             116,526       116,526        
Granted (in shares)                     461,121        
Vested (in shares)                     (137,712)        
Total awarded and unvested at the end of the period (in shares)         439,935           439,935        
Weighted average grant date fair value                              
Total awarded and unvested at the beginning of the period (in dollars per unit)             $ 6.32       $ 6.32        
Granted (in dollars per unit)                     11.05        
Vested (in dollars per unit)                     6.32        
Total awarded and unvested at the end of the period (in dollars per unit)         $ 11.28           $ 11.28        
Additional disclosures                              
Unamortized expense         $ 8.4           $ 8.4        
Weighted average period for recognizing unrecognized stock-based compensation expense                     2 years 6 months        
2019 ROIC PSUs                              
Number of units                              
Vested (in shares)           (137,712)                  
Total awarded and unvested at the end of the period (in shares)         0           0        
Additional disclosures                              
Vesting period                         3 years    
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned           200.00%                  
2019 ROIC PSUs | Minimum                              
Additional disclosures                              
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned                         0.00%    
2019 ROIC PSUs | Maximum                              
Additional disclosures                              
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned                         200.00%    
2019 ROIC PSUs | Common Stock                              
Number of units                              
Issuance of common stock upon conversion of performance share units (in shares)           275,424                  
2022 ROIC PSUs                              
Additional disclosures                              
Vesting period   3 years                          
2022 ROIC PSUs | Minimum                              
Additional disclosures                              
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned   0.00%                          
2022 ROIC PSUs | Maximum                              
Additional disclosures                              
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned   200.00%