Subsidiary Guarantors Consolidated Cash Flow (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ 419,318	$ 222,516
Net cash used in investing activities	(1,220,528)	(596,853)
Net cash provided by financing activities	751,736	191,117
Decrease in cash and restricted cash	(49,474)	(183,220)
Cash and restricted cash at beginning of period	102,482	214,142
Cash and restricted cash at end of period	53,008	30,922
Eliminating Entries
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0	0
Net cash used in investing activities	53,295	(133,880)
Net cash provided by financing activities	(53,295)	133,880
Decrease in cash and restricted cash	0	0
Cash and restricted cash at beginning of period	0	0
Cash and restricted cash at end of period	0	0
Matador \| Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(361,016)	(99,546)
Net cash used in investing activities	0	33
Net cash provided by financing activities	361,155	0
Decrease in cash and restricted cash	139	(99,513)
Cash and restricted cash at beginning of period	286	99,795
Cash and restricted cash at end of period	425	282
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	12,318	24,075
Net cash used in investing activities	(120,836)	(75,749)
Net cash provided by financing activities	109,400	58,732
Decrease in cash and restricted cash	882	7,058
Cash and restricted cash at beginning of period	5,663	2,900
Cash and restricted cash at end of period	6,545	9,958
Guarantor Subsidiaries \| Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	768,016	297,987
Net cash used in investing activities	(1,152,987)	(387,257)
Net cash provided by financing activities	334,476	(1,495)
Decrease in cash and restricted cash	(50,495)	(90,765)
Cash and restricted cash at beginning of period	96,533	111,447
Cash and restricted cash at end of period	$ 46,038	$ 20,682

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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