v2.4.0.6
Valuation and Qualifying Accounts (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Allowance for obsolete inventory
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 15,943 $ 16,210 $ 15,593
Additions Charged to Costs and Expenses 6,258 4,611 5,840
Additions Through Acquisition 15 725  
Other Changes Add (Deduct) (4,859) [1] (5,603) [1] (5,223) [1]
Balance at End of Period 17,357 15,943 16,210
Allowance for doubtful accounts receivable
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 4,473 6,369 9,593
Additions Charged to Costs and Expenses 375 25 1,599
Additions Through Acquisition 365 532  
Other Changes Add (Deduct) (945) [2] (2,453) [2] (4,823) [2]
Balance at End of Period $ 4,268 $ 4,473 $ 6,369
[1] Inventory disposals, net of recoveries
[2] Uncollectible accounts receivable written off, net of recoveries.