Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Oak Valley Resources, LLC [Member]	Eagle Ford [Member]	Lynden Arrangement [Member]	Members' Equity [Member]	Members' Equity [Member] Oak Valley Resources, LLC [Member]	Members' Equity [Member] Oak Valley Resources, LLC [Member] Subsidiaries [Member]	Common Stock [Member]	Common Stock [Member] Oak Valley Resources, LLC [Member]	Common Stock [Member] Oak Valley Resources, LLC [Member] Subsidiaries [Member]	Common Stock [Member] Eagle Ford [Member]	Common Stock [Member] Lynden Arrangement [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Oak Valley Resources, LLC [Member]	Additional Paid-in Capital [Member] Oak Valley Resources, LLC [Member] Subsidiaries [Member]	Additional Paid-in Capital [Member] Eagle Ford [Member]	Additional Paid-in Capital [Member] Lynden Arrangement [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Treasury Stock [Member] Oak Valley Resources, LLC [Member]
Beginning Balance, amount at Dec. 31, 2013	$ 148,922				$ 148,922
Common stock issued, net of offering costs and contributions		$ 107,020				$ 107,020	$ (268,220)			$ 9					$ 268,211
Common stock issued, net of offering costs and contributions, shares										9,124,452
Stock issued during period for acquisitions and reverse acquisition		$ 32,995	$ 56,425						$ 2		$ 3			$ 33,453		$ 56,422				$ (460)
Stock issued during period for acquisitions and reverse acquisition, shares									1,753,388		2,957,288									(15,357)
Net loss	(28,834)				$ 12,278													$ (41,112)
Ending Balance, amount at Dec. 31, 2014	316,528							$ 14					$ 358,086					(41,112)	$ (460)
Ending Balance, shares at Dec. 31, 2014								13,835,128											(15,357)
Net loss	(116,655)																	(116,655)
Ending Balance, amount at Dec. 31, 2015	199,873							$ 14					358,086					(157,767)	$ (460)
Ending Balance, shares at Dec. 31, 2015								13,835,128											(15,357)
Common stock issued, net of offering costs and contributions	47,125							$ 5					47,120
Common stock issued, net of offering costs and contributions, shares								4,753,770
Stock-based compensation expense	3,301												3,301
Stock issued during period for acquisitions and reverse acquisition				$ 45,699								$ 4					$ 45,695
Stock issued during period for acquisitions and reverse acquisition, shares												3,700,279
Net loss	(54,541)																	(54,541)
Ending Balance, amount at Dec. 31, 2016	$ 241,457							$ 23					$ 454,202					$ (212,308)	$ (460)
Ending Balance, shares at Dec. 31, 2016								22,289,177											(15,357)