Segment Information - Total Assets by Business Segment (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 1,343,296	$ 1,361,827
Operating Segments [Member] | Chemical [Member]
Segment Reporting Information [Line Items]
Total assets	1,175,621	1,159,592
Operating Segments [Member] | Climate Control [Member]
Segment Reporting Information [Line Items]
Total assets	119,878	148,997
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Total assets	5,391	5,502
Corporate [Member] | Corporate [Member]
Segment Reporting Information [Line Items]
Total assets	$ 42,406	$ 47,736