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Segment Information - Segment Financial Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Segment Reporting Information [Line Items]        
Net sales $ 182,659 $ 201,662 $ 376,517 $ 380,187
Gross profit 34,882 48,869 77,241 97,591
Operating income 2,560 23,764 16,783 49,625
Interest expense, net 2,230 5,671 5,628 12,379
Non-operating income, net (49) (76) (84) (153)
Provisions (benefit) for income taxes (41) 7,047 4,140 14,701
Equity in earnings of affiliate - Climate Control   (12)   (79)
Income from continuing operations 420 11,134 7,099 22,777
Corporate [Member]        
Segment Reporting Information [Line Items]        
Operating income (8,862) (4,951) (15,609) (12,622)
Chemical [Member]        
Segment Reporting Information [Line Items]        
Net sales 112,768 135,756 239,582 250,977
Gross profit 13,627 29,256 35,457 57,682
Non-operating income, net (28) (63) (61) (140)
Chemical [Member] | Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Operating income 6,840 23,589 23,500 52,402
Climate Control [Member]        
Segment Reporting Information [Line Items]        
Net sales 66,842 62,751 132,040 123,100
Gross profit 20,081 18,502 40,043 37,766
Non-operating income, net (4)   (4)  
Equity in earnings of affiliate - Climate Control   (12)   (79)
Climate Control [Member] | Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Operating income 4,004 4,612 8,316 8,944
Other [Member]        
Segment Reporting Information [Line Items]        
Net sales 3,049 3,155 4,895 6,110
Gross profit 1,174 1,111 1,741 2,143
Other [Member] | Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Operating income 578 514 576 901
Corporate and Other [Member]        
Segment Reporting Information [Line Items]        
Non-operating income, net $ (17) $ (13) $ (19) $ (13)