Quarterly report pursuant to Section 13 or 15(d)

Equity Based Compensation (Details)

v3.20.2
Equity Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 7 Months Ended 9 Months Ended
Mar. 12, 2019
Jul. 31, 2020
Jan. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Additional disclosures                
Expense recognized       $ 3,678 $ 20,129   $ 9,713 $ 53,095
Antero Midstream Partners                
Additional disclosures                
Expense recognized       1,200   $ 3,600 4,500  
Antero Resources                
Additional disclosures                
Unamortized expense       11,400     11,400  
Midstream LTIP                
Additional disclosures                
Unamortized expense       $ 21,000     $ 21,000  
Weighted average period for recognizing unrecognized stock-based compensation expense             2 years 6 months  
2017 AMGP LTIP                
Additional disclosures                
Expense recognized         0     200
AM LTIP                
Number of units                
Total awarded and unvested at the beginning of the period (in shares)     1,275,990       1,275,990  
Granted (in shares)             2,495,907  
Vested (in shares)             (499,365)  
Forfeited (in shares)             (47,367)  
Total awarded and unvested at the end of the period (in shares)       3,225,165     3,225,165  
Weighted average grant date fair value                
Total awarded and unvested at the beginning of the period (in dollars per unit)     $ 14.38       $ 14.38  
Granted (in dollars per unit)             6.34  
Vested (in dollars per unit)             14.33  
Forfeited (in dollars per unit)             14.43  
Total awarded and unvested at the end of the period (in dollars per unit)       $ 8.17     $ 8.17  
Aggregate intrinsic value                
Total awarded and unvested at the beginning of the period     $ 9,685       $ 9,685  
Total awarded and unvested at the end of the period       $ 17,319     17,319  
Additional disclosures                
Expense recognized       $ 2,300     $ 5,000  
Number of stock-based compensation awards authorized 15,398,901              
Number of shares available for future grant under the Plan       11,263,683     11,263,683  
Cash awards granted   $ 700 $ 2,200          
Vesting period for cash awards   4 years 3 years          
Cash awards accrued in other liabilities       $ 1,300     $ 1,300  
Series B Unit, Vested and Unvested                
Additional disclosures                
Shares exchange ratio 176.0041              
Exchanged B Units                
Additional disclosures                
Expense recognized         18,000     $ 47,000
Shares exchanged 17,353,999              
Common stock issued in exchange 98,600              
ROIC PSUs                
Additional disclosures                
Expense recognized       100     200  
Unamortized expense       $ 500     $ 500  
Reversal of recognized expense         $ 200      
Weighted average period for recognizing unrecognized stock-based compensation expense             1 year 6 months