Condensed Consolidated Statements of Operations - Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Revenues	$ 234,382	$ 212,426	$ 450,720	$ 397,448
Realized gain (loss) on derivatives	1,165	(2,488)	4,435	(6,746)
Unrealized gain (loss) on derivatives	6,157	1,429	(39,562)	11,845
Total revenues	241,704	211,367	415,593	402,547
Expenses
Production taxes, transportation and processing	21,542	20,110	41,207	37,901
Lease operating	26,351	25,006	57,514	47,154
Purchased natural gas	8,172	0	18,806	0
Depletion, depreciation and amortization	80,132	66,838	156,999	122,207
Accretion of asset retirement obligations	420	375	834	739
General and administrative	19,876	19,369	38,166	37,295
Total expenses	164,915	137,374	331,264	255,192
Operating income	76,789	73,993	84,329	147,355
Other income (expense)
Inventory impairment	(368)	0	(368)	0
Interest expense	(18,068)	(8,004)	(35,997)	(16,495)
Other expense	(423)	(352)	(532)	(299)
Total other expense	(18,859)	(8,356)	(36,897)	(16,794)
Income before income taxes	57,930	65,637	47,432	130,561
Income tax provision
Deferred	12,858	0	11,845	0
Total income tax provision	12,858	0	11,845	0
Net income	45,072	65,637	35,587	130,561
Net income attributable to non-controlling interest in subsidiaries	8,320	5,831	15,782	10,861
Net income attributable to Matador Resources Company shareholders	$ 36,752	$ 59,806	$ 19,805	$ 119,700
Earnings per common share
Basic (in dollars per share)	$ 0.32	$ 0.53	$ 0.17	$ 1.08
Diluted (in dollars per share)	$ 0.31	$ 0.53	$ 0.17	$ 1.08
Weighted average common shares outstanding
Basic (shares)	116,571	112,706	116,469	110,809
Diluted (shares)	116,903	113,056	116,839	111,280
Oil and natural gas revenues
Revenues
Revenues	$ 211,060	$ 209,019	$ 404,329	$ 390,973
Third-party midstream services revenues
Revenues
Revenues	14,359	3,407	26,197	6,475
Expenses
Plant and other midstream services operating	8,422	5,676	17,738	9,896
Sales of purchased natural gas
Revenues
Revenues	$ 8,963	$ 0	$ 20,194	$ 0