SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	0 Months Ended	3 Months Ended
	Feb. 26, 2015	Mar. 31, 2015	Mar. 31, 2014	Feb. 26, 2015	Feb. 25, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Common stock, authorized (in shares)				120,000,000	60,000,000
Stockholders' Equity Note, Stock Split, Conversion Ratio	2
Amount of Transitional Energy Facility Assessment and Public Utilities Assessment included in revenues and cost of sales		$ 600,000	$ 400,000
Impairment charges		0	0
Amount of costs related to interests in proved and unproved properties in Pennsylvania, net of amortization		$ 8,900,000				$ 8,900,000
Shares of treasury stock held (in shares)		227,432				263,578