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Goodwill And Related Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2013
Goodwill And Related Intangible Assets [Abstract]  
Schedule Of Changes In Carrying Amount Of Goodwill
        Industrial and  
    Residential   Infrastructure    
    Products   Products   Total 
Balance at January 1, 2012 $ 192,834 $ 155,492 $ 348,326
Acquired goodwill   4,537     10,474     15,011  
Impairment   (4,328 )   –     (4,328 )
Foreign currency translation   –     854     854  
Balance at December 31, 2012 $ 193,043   $ 166,820   $ 359,863  
Acquired goodwill   2,467     –     2,467  
Adjustments to prior year acquisitions   10     242     252  
Impairment   –     (21,040 )   (21,040 )
Foreign currency translation   –     (368 )   (368 )
Balance at December 31, 2013 $ 195,520   $ 145,654   $ 341,174  
Schedule Of Goodwill Impairment Tests
Date of Impairment Test WACC
October 31, 2013 11.1% to 12.7%
October 31, 2012 10.7% to 13.1%
Schedule Of Acquired Intangible Assets
  December 31, 2013 December 31, 2012  
  Gross
Carrying
Amount		 Accumulated
Amortization		 Gross
Carrying
Amount		 Accumulated
Amortization		 Estimated
Useful Life
Indefinite-lived intangible assets:                  
Trademarks $ 45,724 $ – $ 48,774 $ – Indefinite
Finite-lived intangible assets:                  
Trademarks   3,989   1,420   2,771   1,085 2 to 15 Years
Unpatented technology   24,690   6,980   24,427   5,204 5 to 20 Years
Customer relationships   54,171   28,926   53,043   24,687 5 to 16 Years
Non-compete agreements   1,937   1,408   3,207   2,598 4 to 10 Years
Backlog   1,330   1,330   1,330   1,219 1 to 2 Years
    86,117   40,064   84,778   34,793  
Total acquired intangible assets $ 131,841 $ 40,064 $ 133,552 $ 34,793  
Schedule of Acquired Intangible Asset Amortization Expense
    2013   2012   2011
Impairment charges $ 2,454 $ 300 $ –
Amortization expense $ 6,572 $ 6,671 $ 6,309
Schedule Of Amortization Expense
2014 $ 5,739
2015 $ 5,604
2016 $ 5,269
2017 $ 4,893
2018 $ 4,328