XML 74 R63.htm IDEA: XBRL DOCUMENT v3.10.0.1
Supplemental Cash Flow and Non-Cash Information (Table Of Supplmental Cash Flow Information) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Supplemental Cash Flow Information [Abstract]        
Income taxes paid, net $ 15,544 $ 2,524 $ 39,296 $ 5,049
Interest paid $ 1,845 $ 2,089 6,163 6,385
Cash Flow Non-cash Investing And Financing Activities Disclosure [Abstract]        
Additions to property, plant and equipment in accounts payable     $ 6,629 $ 6,024