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Summary of Significant Accounting Policies - Shipping and Handling Costs Included in Net Sales and Selling, General and Administrative Expense (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Chemical [Member]
      
Components Of Other Operating Cost And Expense Line Items      
Shipping costs-Net sales $ 21,954 $ 23,395 $ 26,179
Handling costs-SG&A 5,437 5,746 5,024
Climate Control [Member]
      
Components Of Other Operating Cost And Expense Line Items      
Shipping and handling costs-SG&A $ 9,520 $ 8,897 $ 8,564