Condensed Consolidated Statements of Operations - Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Revenues	$ 221,825	$ 264,498	$ 593,529	$ 715,218
Lease bonus - mineral acreage	0	1,711	4,062	1,711
Realized (loss) gain on derivatives	(5,406)	3,346	49,571	7,781
Unrealized (loss) gain on derivatives	(13,033)	9,847	(9,271)	(29,715)
Total revenues	203,386	279,402	637,891	694,995
Expenses
Production taxes, transportation and processing	25,840	24,762	66,353	65,969
Lease operating	23,392	29,714	80,464	87,228
Purchased natural gas	11,144	16,608	30,124	35,414
Depletion, depreciation and amortization	88,025	92,498	272,082	249,497
Accretion of asset retirement obligations	478	520	1,449	1,354
Full-cost ceiling impairment	251,163	0	575,164	0
General and administrative	15,100	20,381	46,045	58,547
Total expenses	424,527	193,300	1,100,810	524,564
Operating (loss) income	(221,141)	86,102	(462,919)	170,431
Net loss on asset sales and impairment	0	(439)	(2,632)	(807)
Other income (expense)
Interest expense	(18,231)	(18,175)	(56,340)	(54,172)
Other (expense) income	(238)	(245)	1,555	(777)
Total other expense	(18,469)	(18,859)	(57,417)	(55,756)
(Loss) income before income taxes	(239,610)	67,243	(520,336)	114,675
Income tax provision (benefit)
Deferred	26,497	13,490	(43,369)	25,335
Income tax provision (benefit)	26,497	13,490	(43,369)	25,335
Net (loss) income	(266,107)	53,753	(476,967)	89,340
Net income attributable to non-controlling interest in subsidiaries	(9,957)	(9,800)	(26,784)	(25,582)
Net (loss) income attributable to Matador Resources Company shareholders	$ (276,064)	$ 43,953	$ (503,751)	$ 63,758
(Loss) earnings per common share
Basic (in dollars per share)	$ (2.38)	$ 0.38	$ (4.34)	$ 0.55
Diluted (in dollars per share)	$ (2.38)	$ 0.38	$ (4.34)	$ 0.54
Weighted average common shares outstanding
Basic (shares)	116,155	116,643	116,036	116,541
Diluted (shares)	116,155	116,976	116,036	116,994
Oil and natural gas revenues
Revenues
Revenues	$ 189,104	$ 229,377	$ 505,785	$ 633,706
Third-party midstream services revenues
Revenues
Revenues	19,363	15,257	49,861	41,454
Expenses
Plant and other midstream services operating	9,385	8,817	29,129	26,555
Sales of purchased natural gas
Revenues
Revenues	$ 13,358	$ 19,864	$ 37,883	$ 40,058