Supplemental Oil and Natural Gas Disclosures (Unaudited) (Details Textual) (USD $)	12 Months Ended
Dec. 31, 2012 Mcf MBoe	Dec. 31, 2012 MBoe	Dec. 31, 2011 MBoe	Dec. 31, 2011 MBoe	Dec. 31, 2010 MBoe	Dec. 31, 2010 MBoe	Dec. 31, 2009 MBoe
Supplemental Oil and Natural Gas Disclosures (Textual) [Abstract]
Asset retirement obligations	$ 5,109,000	$ 5,109,000	$ 3,935,000	$ 3,935,000	$ 1,000,000	$ 1,000,000
Capitalized internal cost	2,600,000	2,600,000	2,000,000	2,000,000	1,600,000	1,600,000
Capitalized interest expense		1,600,000		1,300,000		0
Interest expense		$ (1,002,000)		$ (683,000)		$ (3,000)
Oil and natural gas prices period							12 months
Average oil and natural gas prices	91.21	2.757	92.71	4.118	4.376	75.96
Conversion of oil to gas equivalent	6	6
Proved oil and natural gas reserves	23,819	23,819	32,196	32,196	21,387	21,387	10,758
Proved oil and natural gas reserves	10,048	10,048	21,353	21,353	14,045	14,045	6,427
Increase (Decrease) in proved oil and natural gas reserves	(5,083)	(5,083)	13,382	13,382	12,062	12,062
Net decrease of proved oil and natural gas reserves	8,378	8,378
Proved oil and natural gas reserves produced	3,294	3,294	2,573	2,573	1,433	1,433
Net gain			10,809	10,809	10,629	10,629
Increase in proved oil and gas reserves as a result of extensions and discoveries	12,927	12,927	13,439	13,439	11,851	11,851
Increase (Decrease) in oil and natural gas reserves, revisions of previous estimates	(18,010)	(18,010)	(57)	(57)	211	211
Proved developed oil and natural gas reserves	13,771	13,771	10,843	10,843	7,342	7,342	4,331
Proved Reserves (Natural gas)	56.00%	56.00%	88.00%	88.00%	99.00%	99.00%
Proved Reserves (Oil)	44.00%	44.00%	12.00%	12.00%	1.00%	1.00%
Annual discount rate for discounted future net cash flows	10.00%	10.00%

Conversion of oil to gas equivalent.

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Discounted future net cash flows relating to proved oil and gas reserves ten percent annual discount rate for estimated timing of cash flows.

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Oil and natural gas prices period.

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Proved developed and undeveloped reserve extensions discoveries and additions.

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Proved developed and undeveloped reserve, net.

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Proved developed and undeveloped reserve production.

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Proved developed and undeveloped reserves decrease net.

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Proved developed and undeveloped reserves net gain.

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Proved developed and undeveloped reserves revisions of period estimates increase decrease.

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Proved natural gas reserves percentage.

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Proved oil and natural gas reserve period increase decrease.

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Proved oil reserves percentage.

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Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 143

-Paragraph 3, 10, 22

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The revenues derived from sales of oil or gas in each geographic area during the reporting period divided by the number of barrels of oil produced or thousands of cubic feet of gas produced.

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Net amount of capitalized costs relating to oil and gas producing activities.

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Amount of interest capitalized during the period.

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 9

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Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities do not include reserves relating to interests of others in properties owned by the enterprise. Measured in barrel of oil equivalent (BOE).

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Net quantities of an enterprise's interests in proved undeveloped reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities do not include reserves relating to interests of others in properties owned by the enterprise. Measured in barrel of oil equivalent (BOE).

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