Condensed Consolidated Statements of Operations - Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Oil and natural gas revenues	$ 209,019	$ 113,764	$ 390,973	$ 228,611
Third-party midstream services revenues	3,407	2,099	6,475	3,654
Realized (loss) gain on derivatives	(2,488)	558	(6,746)	(1,661)
Unrealized gain on derivatives	1,429	13,190	11,845	33,821
Total revenues	211,367	129,611	402,547	264,425
Expenses
Production taxes, transportation and processing	20,110	12,875	37,901	24,682
Lease operating	25,006	16,040	47,154	31,797
Plant and other midstream services operating	5,676	2,942	9,896	5,283
Depletion, depreciation and amortization	66,838	41,274	122,207	75,266
Accretion of asset retirement obligations	375	314	739	614
General and administrative	19,369	17,177	37,295	33,515
Total expenses	137,374	90,622	255,192	171,157
Operating income	73,993	38,989	147,355	93,268
Other income (expense)
Net gain on asset sales and inventory impairment	0	0	0	7
Interest expense	(8,004)	(9,224)	(16,495)	(17,679)
Other (expense) income	(352)	1,922	(299)	1,991
Total other expense	(8,356)	(7,302)	(16,794)	(15,681)
Net income	65,637	31,687	130,561	77,587
Net income attributable to non-controlling interest in subsidiaries	5,831	3,178	10,861	5,094
Net income attributable to Matador Resources Company shareholders	$ 59,806	$ 28,509	$ 119,700	$ 72,493
Earnings per common share
Basic (in dollars per share)	$ 0.53	$ 0.28	$ 1.08	$ 0.72
Diluted (in dollars per share)	$ 0.53	$ 0.28	$ 1.08	$ 0.72
Weighted average common shares outstanding
Basic (shares)	112,706	100,211	110,809	100,005
Diluted (shares)	113,056	100,227	111,280	100,455