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Income Taxes (Details Textual) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Income Taxes (Textual) [Abstract] |  |
Valuation allowance against deferred tax asset | $ 15,000,000 |
Annual limitation on use of pre-ownership change losses | 284,000 |
Pre-ownership change losses | 36,200,000 |
Carryforward period of ownership | 20 years |
Utilize pre-ownership change losses | 5,600,000 |
Write-off of deferred tax assets |  | $ 10,400,000
Federal income tax rate | 34.00% |
Percentage Of Change In Ownership For Operating Loss Carryforward | 50.00% |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43-49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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