XML 66 R55.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Line Items]                      
Effective income tax rate 22.90% 22.10% 22.20% 23.70%              
Income before income taxes, domestic operations     $ 4,300 $ 13,700              
Income before income taxes, foreign operations     100,700 103,700              
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax Benefit         $ 33,300            
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit)         49,200            
Liabilities for uncertain income tax positions $ 55,700   55,700   52,200            
Cash paid for income taxes     21,900 $ 46,600              
Prepaid tax payments $ 0   $ 0   $ 6,000            
California Franchise Tax Board [Member]                      
Income Taxes [Line Items]                      
Income Tax Examination, Year under Examination           2016 2015   2013 2012  
Internal Revenue Service (IRS) [Member]                      
Income Taxes [Line Items]                      
Income Tax Examination, Year under Examination           2016 2015 2014 2013 2012  
New York State Division of Taxation and Finance [Member]                      
Income Taxes [Line Items]                      
Income Tax Examination, Year under Examination               2014 2013 2012 2011
Georgia Department of Revenue [Member]                      
Income Taxes [Line Items]                      
Income Tax Examination, Year under Examination           2016 2015 2014      
Ministry of the Economy, Finance and Industry, France [Member]                      
Income Taxes [Line Items]                      
Income Tax Examination, Year under Examination           2016 2015 2014 2013 2012 2011