Condensed Consolidated Statements of Operations - Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Revenues	$ 223,091		$ 620,539
Realized gain (loss) on derivatives	5,424	$ 485	(1,322)	$ (1,176)
Unrealized (loss) gain on derivatives	(21,337)	(12,372)	(9,492)	21,449
Total revenues	207,178	126,279	609,725	390,703
Expenses
Production taxes, transportation and processing	20,215	15,666	58,116	40,348
Lease operating	22,531	16,689	69,685	48,486
Plant and other midstream services operating	7,291	3,096	17,187	8,379
Depletion, depreciation and amortization	70,457	47,800	192,664	123,066
Accretion of asset retirement obligations	387	323	1,126	937
General and administrative	18,444	16,156	55,739	49,671
Total expenses	139,325	99,730	394,517	270,887
Operating income	67,853	26,549	215,208	119,816
Other income (expense)
Net (loss) gain on asset sales and inventory impairment	(196)	16	(196)	23
Interest expense	(10,340)	(8,550)	(26,835)	(26,229)
Prepayment premium on extinguishment of debt	(31,226)	0	(31,226)	0
Other (expense) income	(976)	(36)	(1,275)	1,956
Total other expense	(42,738)	(8,570)	(59,532)	(24,250)
Net income	25,115	17,979	155,676	95,566
Net income attributable to non-controlling interest in subsidiaries	7,321	2,940	18,182	8,034
Net income attributable to Matador Resources Company shareholders	$ 17,794	$ 15,039	$ 137,494	$ 87,532
Earnings per common share
Basic (in dollars per share)	$ 0.15	$ 0.15	$ 1.22	$ 0.87
Diluted (in dollars per share)	$ 0.15	$ 0.15	$ 1.21	$ 0.87
Weighted average common shares outstanding
Basic (shares)	116,358	100,365	112,659	100,141
Diluted (shares)	116,912	100,504	113,208	100,580
Oil and natural gas revenues
Revenues
Revenues	$ 216,282	$ 134,948	$ 607,255	$ 363,559
Third-party midstream services revenues
Revenues
Revenues	$ 6,809	$ 3,218	$ 13,284	$ 6,871