SUPPLEMENTAL OIL AND GAS INFORMATION (UNAUDITED) - Proved Reserve Data (Details)	12 Months Ended
	Dec. 31, 2018 Boe Mcf bbl	Dec. 31, 2018 Boe bbl Mcf	Dec. 31, 2018 Boe MMBoe bbl Mcf	Dec. 31, 2018 Boe bbl Mcf	Dec. 31, 2017 Boe Mcf bbl	Dec. 31, 2017 Boe bbl Mcf	Dec. 31, 2017 MMBoe Boe Mcf bbl	Dec. 31, 2017 Boe Mcf bbl	Dec. 31, 2016 Boe Mcf bbl	Dec. 31, 2016 Boe Mcf bbl	Dec. 31, 2016 MMBoe Boe Mcf bbl	Dec. 31, 2016 Boe Mcf bbl	Dec. 31, 2015 Boe bbl Mcf
Natural Gas
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved Developed and Undeveloped Reserves, Beginning Balance | Mcf	78,120,767				46,832,327				50,900,984
Revisions of Previous Estimates | Mcf	425,564				8,838,976				(8,697,825)
Extensions, Discoveries and Other Additions | Mcf	28,347,629				27,637,350				7,695,309
Purchases of Minerals in Place | Mcf	37,397,266								960,758
Production | Mcf	(9,224,766)				(5,187,886)				(4,026,899)
Proved Developed and Undeveloped Reserves, Ending Balance | Mcf	135,066,460				78,120,767				46,832,327
Proved Developed Reserves | Mcf	82,314,664	82,314,664	82,314,664	82,314,664	46,518,005	46,518,005	46,518,005	46,518,005	32,808,111	32,808,111	32,808,111	32,808,111	33,619,954
Proved Undeveloped Reserve | Mcf	52,751,796	52,751,796	52,751,796	52,751,796	31,602,762	31,602,762	31,602,762	31,602,762	14,024,216	14,024,216	14,024,216	14,024,216	17,281,030
Oil
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved Developed and Undeveloped Reserves, Beginning Balance | bbl		62,812,198				46,275,291				56,814,464
Revisions of Previous Estimates | bbl		3,469,733				889,814				(13,995,801)
Extensions, Discoveries and Other Additions | bbl		28,516,382				20,184,388				7,142,439
Purchases of Minerals in Place | bbl		25,965,285								640,108
Production | bbl		(7,790,182)				(4,537,295)				(4,325,919)
Proved Developed and Undeveloped Reserves, Ending Balance | bbl		112,973,416				62,812,198				46,275,291
Proved Developed Reserves | bbl	62,497,051	62,497,051	62,497,051	62,497,051	38,592,506	38,592,506	38,592,506	38,592,506	32,245,139	32,245,139	32,245,139	32,245,139	36,573,821
Proved Undeveloped Reserve | bbl	50,476,365	50,476,365	50,476,365	50,476,365	24,219,692	24,219,692	24,219,692	24,219,692	14,030,152	14,030,152	14,030,152	14,030,152	20,240,643
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved Developed and Undeveloped Reserves, Beginning Balance | Boe				75,832,326				54,080,679				65,297,962
Revisions of Previous Estimates			3,500,000	3,540,660			2.4	2,362,977			(15.4)	(15,445,439)
Extensions, Discoveries and Other Additions | Boe				33,240,987				24,790,613				8,424,991
Purchases of Minerals in Place			32,198,163									800,234
Production | Boe				(9,327,643)				(5,401,943)				(4,997,069)
Proved Developed and Undeveloped Reserves, Ending Balance | Boe				135,484,493				75,832,326				54,080,679
Proved Developed Reserves | Boe	76,216,162	76,216,162	76,216,162	76,216,162	46,345,507	46,345,507	46,345,507	46,345,507	37,713,158	37,713,158	37,713,158	37,713,158	42,177,148
Proved Undeveloped Reserves | Boe	59,268,331	59,268,331	59,268,331	59,268,331	29,486,819	29,486,819	29,486,819	29,486,819	16,367,521	16,367,521	16,367,521	16,367,521	23,120,815