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Income Taxes from Continuing Operations (Details) - Summary of Unrecognized Tax Benefits - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits      
Balance $ 2,285 $ 2,010 $ 845
Additions relating to current year 303 356 709
Additions relating to acquired entities     456
Payments of amounts relating to prior years   (81)  
Terminations of exposures relating to prior years (1,287)    
Balance $ 1,301 $ 2,285 $ 2,010