Segment Information - Segment Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 201,662	$ 202,223	$ 380,187	$ 352,902
Gross profit	48,869	38,659	97,591	64,081
Operating income	23,764	12,225	49,625	11,988
Interest expense, net	5,671	536	12,379	1,267
Non-operating other expense (income), net	(76)	8	(153)	24
Provisions for income taxes	7,047	4,367	14,701	3,622
Equity in earnings of affiliate-Climate Control	(12)	(172)	(79)	(343)
Income from continuing operations	11,134	7,486	22,777	7,418
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income	(4,951)	(4,049)	(12,622)	(7,185)
Chemical [Member]
Segment Reporting Information [Line Items]
Net sales	135,756	121,328	250,977	198,818
Gross profit	29,256	12,095	57,682	14,506
Non-operating other expense (income), net	(63)		(140)
Chemical [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	23,589	6,385	52,402	2,579
Climate Control [Member]
Segment Reporting Information [Line Items]
Net sales	62,751	77,357	123,100	147,627
Gross profit	18,502	25,403	37,766	47,385
Climate Control [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	4,612	9,456	8,944	15,840
Other [Member]
Segment Reporting Information [Line Items]
Net sales	3,155	3,538	6,110	6,457
Gross profit	1,111	1,161	2,143	2,190
Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	514	433	901	754
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Non-operating other expense (income), net	$ (13)	$ 8	$ (13)	$ 24