SUPPLEMENTARY OIL AND GAS INFORMATION (UNAUDITED) SUPPLEMENTARY OIL AND GAS INFORMATION (UNAUDITED) (Details)	12 Months Ended
	Feb. 20, 2017 $ / bbl $ / MMBTU	Dec. 31, 2016 $ / bbl $ / MMBTU
Gulf of Mexico [Member]
Oil and Gas In Process Activities [Line Items]
Total Reserve Volumes Subject to Reference Price Differential Quality Adjustments, Percentage		59.00%
Natural Gas [Member]
Oil and Gas In Process Activities [Line Items]
Average sales price (usd per bbl) | $ / MMBTU		2.48
Crude Oil
Oil and Gas In Process Activities [Line Items]
Average sales price (usd per bbl) | $ / bbl		42.75
Subsequent Event [Member] | Natural Gas [Member]
Oil and Gas In Process Activities [Line Items]
Average sales price (usd per bbl) | $ / MMBTU	2.65
Subsequent Event [Member] | Crude Oil
Oil and Gas In Process Activities [Line Items]
Average sales price (usd per bbl) | $ / bbl	45.99