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Income Taxes (Details 4) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Operating loss carryforwards      
Valuation allowance $ 4,438 $ 3,975  
Unrecognized tax benefits that would impact effective tax rate 200 300  
Interest and penalties accrued 300 300  
Reconciliation of the beginning and ending amount of unrecognized tax benefits      
Balance at the beginning of year 343 413 $ 499
Reductions for tax positions of prior years (103) (70) (86)
Balance at the end of year 240 $ 343 $ 413
State and Puerto Rico      
Operating loss carryforwards      
Future tax benefits 6,800    
Net operating loss carryforwards 96,800    
Valuation allowance 4,400    
Increase in valuation allowance 500    
Deferred tax assets net of valuation allowance $ 2,800