v2.3.0.11
Financial Statement Information (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2010
Reserve for estimated returns, discounts and allowances $ 18.2   $ 18.2
Reserve for uncollectible accounts 5.9   6.9
Amortization expense 3.4 2.1  
Estimated annual amortization expense, current fiscal year 6.5    
Estimated annual amortization expense, 2012 5.8    
Estimated annual amortization expense, 2013 5.2    
Estimated annual amortization expense, 2014 4.6    
Estimated annual amortization expense, 2015 4.3    
Borrowings under credit facility, fair value and carrying value 574.6    
Trade Names And Trademarks [Member]
      
Acquisitions resulted in the recognition 0.8    
Amortized over a useful life, minimum, years 10    
Amortized over a useful life, maximum, years 20    
Covenants Not To Compete [Member]
      
Acquisitions resulted in the recognition 0.1    
Amortized over a useful life, minimum, years 1    
Amortized over a useful life, maximum, years 5    
Customer Relationships [Member]
      
Acquisitions resulted in the recognition $ 1.3    
Amortized over a useful life, minimum, years 5    
Amortized over a useful life, maximum, years 10