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Income Taxes (Details 5) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Total Income Tax Expenses [Line Items]      
Income from continuing operations $ 11,405 $ 21,591 $ 19,476
Other comprehensive gain (loss) (168) 43 (99)
Excess tax benefits allocated to additional paid-in capital from share-based compensation (771) (1,232) (1,271)
Total income tax expense $ 10,466 $ 20,402 $ 18,106