Annual report pursuant to Section 13 and 15(d)

Asset Retirement Obligations (Details)

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Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Asset Retirement Obligations      
Asset retirement obligations - beginning of period $ 58,979 $ 34,610  
Obligations settled (153)    
Obligations incurred 2,312 9,981  
Revisions to prior estimates (2,537) 11,569  
Accretion expense 3,762 2,819 $ 2,610
Effect of deconsolidation of Antero Midstream Partners LP (7,518)    
Asset retirement obligations - end of period $ 54,845 $ 58,979 $ 34,610