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Segment Information - Total Assets by Business Segment (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]    
Total assets $ 1,093,644 $ 1,083,097
Operating Segments [Member] | Chemical [Member]
    
Segment Reporting Information [Line Items]    
Total assets 889,593 842,725
Operating Segments [Member] | Climate Control [Member]
    
Segment Reporting Information [Line Items]    
Total assets 148,570 159,960
Operating Segments [Member] | Other [Member]
    
Segment Reporting Information [Line Items]    
Total assets 7,386 6,832
Corporate [Member]
    
Segment Reporting Information [Line Items]    
Total assets $ 48,095 $ 73,580