XML 117 R105.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income taxes (Effective Income Tax Rate Reconciliation) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract        
Total Income Tax Expense (Benefit) $ 12,255 $ 560 $ 29,860 $ 13,757
EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract        
Total Income Tax Expense (Benefit)     33.70% 29.80%