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(3) Income Taxes (in thousands) (Tables) | 12 Months Ended
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Dec. 31, 2013
Income Tax Disclosure [Abstract] |
Expected Income Tax |
|  | 2013 |  |  | 2012 |
Expected amount |  | $ | 10,784 |  |  | $ | 12,064 |
State income taxes, net of federal benefit |  |  | 1,540 |  |  |  | 1,723 |
Percentage depletion |  |  | (4,373 | ) |  |  | (1,816 | )
Other |  |  | (289 | ) |  |  | (1,303 | )
|  | $ | 7,662 |  |  | $ | 10,668 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | 2013 |  |  | 2012 |
Long-term deferred tax assets: |  |  |  |  |  |
Stock-based compensation |  | $ | 372 |  |  | $ | 582 |
Investment in Savoy |  |  | 1,885 |  |  |  | 1,582 |
Oil and gas properties |  |  | 913 |  |  |  | 1,778 |
Net long-term deferred tax assets |  |  | 3,170 |  |  |  | 3,942 |
Long-term deferred tax liabilities: |  |  |  |  |  |  |  |
Coal properties |  |  | (46,474 | ) |  |  | (39,805 | )
Net deferred tax liability |  | $ | 43,304 |  |  | $ | 35,863 |

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- Definition Expected Income Tax + References No definition available. + Details
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- Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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