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Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Income Tax Disclosure [Abstract]      
Income tax expense $ 6 $ 13  
Income Taxes (Textual) [Abstract]      
Unrecognized tax benefits 9,100   $ 9,100
Unrecognized tax benefits that would impact effective tax rate 405   409
Accrued for interest and penalties 55   $ 74
Reduction in gross unrecognized tax benefits $ 19