Asset Acquisitions (Details Textuals) (USD $)	12 Months Ended		0 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jul. 02, 2012 Clearfield Energy	Mar. 31, 2012 Clearfield Energy	Dec. 31, 2013 Clearfield Energy
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement					Jul. 02, 2012
Business Acquisition, Name of Acquired Entity					Clearfield
Payments to Acquire Businesses, Gross		$ 400,000	$ 215,397,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				20 years
Right Of Way Option Life				10 years
Business Sale Agreement Date					Oct. 15, 2012
Assets Held for Sale Date of Sale					Jan. 18, 2013
Goodwill, Purchase Accounting Adjustments	$ 1,200,000