Segment Information - Total Assets by Business Segment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total assets	$ 1,090,305	$ 1,083,097
Chemical [Member]
Segment Reporting Information [Line Items]
Total assets	885,319	842,725
Climate Control [Member]
Segment Reporting Information [Line Items]
Total assets	140,927	159,960
Other [Member]
Segment Reporting Information [Line Items]
Total assets	6,170	6,832
Corporate assets [Member]
Segment Reporting Information [Line Items]
Total assets	$ 57,889	$ 73,580