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Fair Value Measurements (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Fair Value Measurements [Abstract] |  |
Fair value and carrying value of debt | $ 8,000,000 |
Fair Value Measurements [Abstract] |  |
Commodity risk management assets |  | 14,000
Available for sale securities | 41,000 | 69,000
Total assets | 41,000 | 83,000
Commodity risk management liability | 677,000 | 280,000
Executive retirement program liability | 841,000 | 865,000
Total | 1,518,000 | 1,145,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Measurements [Abstract] |  |
Commodity risk management assets |  | 0
Available for sale securities | 41,000 | 69,000
Total assets | 41,000 | 69,000
Commodity risk management liability | 0 | 0
Executive retirement program liability | 0 | 0
Total | 0 | 0
Significant Other Observable Inputs (Level 2) [Member] |  |
Fair Value Measurements [Abstract] |  |
Commodity risk management assets |  | 14,000
Available for sale securities | 0 | 0
Total assets | 0 | 14,000
Commodity risk management liability | 677,000 | 280,000
Executive retirement program liability | 0 | 0
Total | 677,000 | 280,000
Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Measurements [Abstract] |  |
Commodity risk management assets |  | 0
Available for sale securities | 0 | 0
Total assets | 0 | 0
Commodity risk management liability | 0 | 0
Executive retirement program liability | 841,000 | 865,000
Total | $ 841,000 | $ 865,000

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition Value of deferred revenue or cost to provide products or services, which is expected to be recognized in income or incurred after one year or beyond the normal operating cycle, if longer, resulting from customer loyalty program. Excludes liability associated with frequent flier programs. Includes liability associated with customer loyalty programs for other businesses, for example, but is not limited to, hotels, supermarkets, credit card companies, automobile rental companies, and book sellers. + References No definition available. + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611 + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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