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           Income Taxes (Details 1) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Jun. 30, 2013 
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           Dec. 31, 2012 
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|---|---|---|
| Valuation allowance against deferred tax assets | ||
| Valuation allowance | $ 5,609 | $ 8,666 | 
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           State [Member] 
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| Valuation allowance against deferred tax assets | ||
| Valuation allowance | $ 5,609 | $ 8,666 | 
| X | ||||||||||
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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