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Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Income Tax Disclosure [Abstract]          
Income tax expense $ 51 $ 61 $ 57 $ 74  
Income Taxes (Textual) [Abstract]          
Unrecognized tax benefits 9,200   9,200   $ 9,100
Unrecognized tax benefits that would impact effective tax rate 428   428   409
Accrued for interest and penalties $ 59   59   $ 74
Reduction in gross unrecognized tax benefits     $ 15