Cash Distribution-Antero Midstream GP LP (Details) - Antero Midstream GP LP - Common shareholders - USD ($) $ / shares in Units, $ in Thousands						3 Months Ended	12 Months Ended
Feb. 21, 2019	Nov. 21, 2018	Aug. 22, 2018	May 23, 2018	Feb. 20, 2018	Mar. 31, 2019	Dec. 31, 2018
Partnership equity and distributions
Distributions	$ 30,543	$ 26,817	$ 23,276	$ 20,109	$ 13,964	$ 30,543	$ 84,166
Distributions per share (in dollars per share)	$ 0.1640	$ 0.1440	$ 0.1250	$ 0.1080	$ 0.0750

Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

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