Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2011

Derivative Financial Instruments Tables [Abstract]

Schedule of Derivative Instruments [Text Block]

Type	Commodity Reference Price	Remaining Contract Period	Volume - MMBTU/Day	Average Price/MMBTU		Fair Value - September 30, 2011
						Asset
Swap	NW Rockies	Calendar 2011	170,000	$5.08	$	21,611
Swap	NYMEX	October 2011	230,000	$4.58	$	5,875
Swap	NYMEX	Calendar 2012	300,000	$5.03	$	86,311
Swap	NYMEX	April - October 2012	90,000	$5.00	$	15,557
Swap	Northeast	Calendar 2011	195,000	$5.81	$	34,305

Gain or loss on derivative instruments

The following table summarizes the pre-tax realized and unrealized gains the Company recognized related to its natural gas derivative instruments in the Consolidated Statements of Income for the three and nine monthsended September 30, 2011 and 2010:

		For the Three Months				For the Nine Months
		Ended September 30,				Ended September 30,
Natural Gas Commodity Derivatives:		2011		2010		2011		2010
Realized gain on commodity derivatives (1)	$	53,630	$	40,583	$	143,749	$	77,568
Unrealized gain on commodity derivatives (1)		60,536		109,603		33,658		268,535
Total gain on commodity derivatives	$	114,166	$	150,186	$	177,407	$	346,103
(1) Included in gain on commodity derivatives in the Consolidated Statements of Income.