Segment Information - Segment Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 171,046	$ 177,350	$ 551,233	$ 530,252
Gross profit (loss)	24,386	48,909	121,977	112,990
Operating income (loss)	(1,197)	23,143	48,428	35,131
Interest expense, net	5,079	5,395	17,458	6,662
Loss on extinguishment of debt		1,296		1,296
Non-operating other income, net	(89)	(34)	(242)	(10)
Provisions (benefit) for income taxes	(2,415)	6,345	12,286	9,967
Equity in earnings of affiliate-Climate Control		(109)	(79)	(452)
Income (loss) from continuing operations	(3,772)	10,250	19,005	17,668
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(4,459)	(3,528)	(17,081)	(10,713)
Chemical [Member]
Segment Reporting Information [Line Items]
Net sales	94,767	104,199	345,744	303,017
Gross profit (loss)	(521)	24,610	57,161	39,116
Non-operating other income, net	(73)	(1)	(213)	(1)
Chemical [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(5,587)	17,680	46,815	20,259
Climate Control [Member]
Segment Reporting Information [Line Items]
Net sales	73,485	69,863	196,585	217,490
Gross profit (loss)	23,862	23,168	61,628	70,553
Climate Control [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	8,452	8,547	17,396	24,387
Other [Member]
Segment Reporting Information [Line Items]
Net sales	2,794	3,288	8,904	9,745
Gross profit (loss)	1,045	1,131	3,188	3,321
Other [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	397	444	1,298	1,198
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Non-operating other income, net	$ (16)	$ (33)	$ (29)	$ (9)

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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