Hedging Program and Derivatives (Details) (USD $) In Thousands, unless otherwise specified											12 Months Ended												3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Commodity Price Derivatives [Member] Derivative Asset - Current [Member]	Dec. 31, 2012 Commodity Price Derivatives [Member] Derivative Asset - Current [Member]	Dec. 31, 2013 Commodity Price Derivatives [Member] Derivative Asset - Long-Term [Member]	Dec. 31, 2012 Commodity Price Derivatives [Member] Derivative Asset - Long-Term [Member]	Dec. 31, 2013 Commodity Price Derivatives [Member] Derivative Liability - Current [Member]	Dec. 31, 2012 Commodity Price Derivatives [Member] Derivative Liability - Current [Member]	Dec. 31, 2013 Commodity Price Derivatives [Member] Derivative Liability - Long-Term [Member]	Dec. 31, 2012 Commodity Price Derivatives [Member] Derivative Liability - Long-Term [Member]	Dec. 31, 2013 Oil - WTI [Member] 2014 [Member] bbl	Dec. 31, 2013 Oil - WTI [Member] 2015 [Member] bbl	Dec. 31, 2013 Oil - WTI [Member] 2016 [Member] bbl	Dec. 31, 2013 Oil - WTI [Member] 2017 [Member] bbl	Dec. 31, 2013 Oil - Brent [Member] 2014 [Member] bbl	Dec. 31, 2013 Oil - Brent [Member] 2015 [Member] bbl	Dec. 31, 2013 Oil - Brent [Member] 2016 [Member] bbl	Dec. 31, 2013 Oil - Brent [Member] 2017 [Member] bbl	Dec. 31, 2013 Oil - LLS [Member] 2014 [Member] bbl	Dec. 31, 2013 Oil - LLS [Member] 2015 [Member] bbl	Dec. 31, 2013 Oil - LLS [Member] 2016 [Member] bbl	Dec. 31, 2013 Oil - LLS [Member] 2017 [Member] bbl	Mar. 17, 2014 Subsequent Event [Member] Natural Gas [Member] 2014 [Member] Mcf	Mar. 17, 2014 Subsequent Event [Member] Natural Gas [Member] 2015 [Member] Mcf
Oil and Gas Delivery Commitments and Contracts [Line Items]
Daily Volume (in Bbl)											687	560	963	500	505	500	0	0	100	0	0	0	1,597	1,450
Swap Price (in dollars per Bbl)											94.16	83.03	84.10	84.18	100.56	97.04	0.00	0.00	101.26	0.00	0.00	0.00	4.10	4.22
Impact of derivative contracts on balance sheet [Abstract]
Derivative asset - current	$ 85	$ 41	$ 85	$ 41
Derivative asset - long-term	925	594			925	594
Derivative Assets	1,010	635
Derivative liability - current	2,728	3,462					2,728	3,462
Derivative liability - long-term	2,274	3,568							2,274	3,568
Derivative Liabilities	$ 5,002	$ 7,030