Subsidiary Guarantors Consolidated Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ 59,240	$ 136,149
Net cash used in investing activities	(214,880)	(220,754)
Net cash provided by financing activities	118,368	34,906
Decrease in cash and restricted cash	(37,272)	(49,699)
Cash and restricted cash at beginning of period	83,984	102,482
Cash and restricted cash at end of period	46,712	52,783
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	0	20,400
Net cash provided by financing activities	0	(20,400)
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	(109)	(144)
Net cash used in investing activities	0	0
Net cash provided by financing activities	0	0
Decrease in cash and restricted cash	(109)	(144)
Cash and restricted cash at beginning of period	456	286
Cash and restricted cash at end of period	347	142
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	32,616	10,385
Net cash used in investing activities	(29,988)	(36,831)
Net cash provided by financing activities	3,968	44,900
Decrease in cash and restricted cash	6,596	18,454
Cash and restricted cash at beginning of period	18,840	5,663
Cash and restricted cash at end of period	25,436	24,117
Guarantor Subsidiaries \| Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	26,733	125,908
Net cash used in investing activities	(184,892)	(204,323)
Net cash provided by financing activities	114,400	10,406
Decrease in cash and restricted cash	(43,759)	(68,009)
Cash and restricted cash at beginning of period	64,688	96,533
Cash and restricted cash at end of period	$ 20,929	$ 28,524

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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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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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