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Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Income Taxes [Abstract]          
Income tax expense $ 7 $ 0 $ 9 $ 2  
Expense related to minimum tax payments     2    
Net change in valuation allowance for deferred tax assets 1,951 $ 2,100 7,520 $ 62,000  
Valuation allowance carried against net deferred tax assets 28,000   28,000   $ 21,000
Federal [Member]          
Operating Loss Carryforwards [Line Items]          
Operating loss carryforwards 48,000   $ 48,000    
Operating loss carryforwards, expiration dates     Dec. 31, 2027    
State [Member]          
Operating Loss Carryforwards [Line Items]          
Operating loss carryforwards $ 38,000   $ 38,000    
Operating loss carryforwards, expiration dates     Dec. 31, 2016