Annual report pursuant to Section 13 and 15(d)

Income Taxes (Unrec) (Details)

v3.8.0.1
Income Taxes (Unrec) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Reconciliation of unrecognized tax benefit      
Unrecognized tax benefits balance at beginning of year $ 16,476 $ 14,129 $ 2,092
Additions based on tax positions related to the current year 1,691 1,153 576
Additions based on tax positions related to prior years 145 1,257  
Additions based on tax positions for acquired entities     12,780
Reductions for settlements with taxing authorities     (1,120)
Reductions for lapses of statute of limitations   (63) (199)
Unrecognized tax benefits balance at end of year 18,312 16,476 $ 14,129
Unrecognized tax benefits that would impact effective tax rate, if recognized 18,312    
Potential interest and penalties related to unrecognized tax benefits included in income tax expense 1,690 880  
Accrued interest and penalties on unrecognized tax benefits $ 6,018 $ 4,328