ACQUISITIONS (Details) (Marcellus Assets, USD $) Share data in Millions, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended
	Aug. 11, 2014 item	Mar. 31, 2014	Dec. 31, 2014	Aug. 11, 2014
Marcellus Assets
ACQUISITIONS
Number of other working interest owners	2
Number of shares exchanged	6.7
Common stock issued	$ 41,400,000
Purchase price
Cash consideration	312,500,000
Fair value of warren equity common shares	41,400,000
Closing adjustments	(7,828,000)
Fair value of earn-out provision	6,340,000
Fair value of farm-out provision	3,410,000
Total purchase price	355,822,000
Maximum payout included as part of the purchase and sale agreement	8,500,000			8,500,000
Probability percentage of achieving the full payout	90.00%			90.00%
Fair values of the assets acquired and liabilities assumed
Proved oil and gas properties			171,070,000
Unproved oil and gas properties			184,752,000
Total purchase price			355,822,000
Unaudited Pro Forma Condensed Combined Financial Information
Revenues		62,559,000
Income (loss) from Operations		24,510,000
Net income (loss)		$ 7,742,000
Diluted net income (loss) per share		$ 0.10