XML 64 R52.htm IDEA: XBRL DOCUMENT v3.5.0.2
Segment Information (Schedule Of Revenue From Unaffiliated Customers By Product And Service) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Revenue $ 158,111 $ 170,504 $ 310,666 $ 331,226
Operating Segments [Member] | Products [Member]        
Revenue 54,322 68,176 106,817 130,891
Operating Segments [Member] | Materials [Member]        
Revenue 40,577 36,401 79,046 73,508
Operating Segments [Member] | Services [Member]        
Revenue $ 63,212 $ 65,927 $ 124,803 $ 126,827