Commitments and Contingencies (Details 1) (Targa North Texas LP [Member], USD $)	1 Months Ended
	Feb. 28, 2011	Sep. 30, 2011
Targa North Texas LP [Member]
Long Term Supply Commitment [Line Items]
Obligated to pay annual fees per ("Mcf") for 2011		$ 1.10
Obligated to pay annual fees per thousand cubic feet ("Mcf") for 2012		1.15
Obligated to pay annual fees per thousand cubic feet ("Mcf") for 2013		1.25
Amount paid under settlement of obligation	2,134,000
Amount under accrued obligation		$ 1,324,000