Oil and Gas Disclosures (Unaudited) - Changes in Standardized Measure of Discounted Future Net Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Oil And Gas Disclosures - Changes In Standardized Measure Of Discounted Future Net Cash Flows Details
Standardized measure - beginning of year	$ 835
Increase (decrease)
Sales, net of production costs	(884)	(345)
Net change in prices, net of production costs	(64)	37
Revisions of quantity estimates	93
Accretion of discount	83	106
Extensions and discoveries, net of future costs	3,925
Sales of reserves-in-place		1,037
Other	262
Standardized measure - end of year	$ 4,250	$ 835

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Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of passage of time.

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Amount of decrease in standardized measure of discounted future net cash flow as a result of sales of minerals in place.

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Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves.

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Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production.

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Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves.

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Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced.

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Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources.

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Amount of standardized measure of discounted future net cash flow relating to proved oil and gas reserves.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 35

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=8451751&loc=d3e63123-109448

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