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Income Taxes (Uncertain Tax Positions) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Unrecognized tax benefits, income tax penalties and interest accrued $ 200 $ 400 $ 400
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at January 1 3,457 3,423 2,832
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions (378)    
Additions based on current year tax positions   162 381
Changes for tax positions of prior years 135   152
Changes for tax positions of prior years   (128)  
Settlements 0    
Settlements   0 58
Balance at December 31 3,214 3,457 3,423
Unrecognized tax benefits that would impact effective tax rate 2,800    
Unrecognized tax benefits, income tax penalties and interest expense ($0.1 million or less) 200 200  
Income taxes paid, net $ 47,800 $ 12,400 $ 16,600