Segment Information - Segment Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 178,525	$ 150,679
Gross profit	48,722	25,422
Operating income (loss)	25,861	(237)
Interest expense, net	6,708	731
Non-operating expense (income), net	(77)	16
Provision (benefit) for income taxes	7,654	(745)
Equity in earnings of affiliate - Climate Control	(67)	(171)
Income (loss) from continuing operations	11,643	(68)
Chemical [Member]
Segment Reporting Information [Line Items]
Net sales	115,221	77,490
Gross profit	28,426	2,411
Operating income (loss)	28,813	(3,806)
Non-operating expense (income), net	(77)
Climate Control [Member]
Segment Reporting Information [Line Items]
Net sales	60,349	70,270
Gross profit	19,264	21,982
Operating income (loss)	4,332	6,384
Other [Member]
Segment Reporting Information [Line Items]
Net sales	2,955	2,919
Gross profit	1,032	1,029
Operating income (loss)	387	321
General corporate expenses [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(7,671)	(3,136)
Non-operating expense (income), net		$ 16