Acquisitions - Additional Information (Detail)		12 Months Ended
	Jun. 01, 2013 USD ($) T	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jun. 15, 2015 USD ($) T
Business And Asset Acquisition [Line Items]
Goodwill		$ 11,265,000	$ 11,502,000	$ 11,726,000
Asset acquisition purchase price		119,349,000	$ 101,819,000	92,865,000
Business acquisition cash paid		5,133,000		68,212,000
Sun Products Corporation’s (SUN's) Pasadena, Texas [Member]
Business And Asset Acquisition [Line Items]
Asset acquisition purchase price		13,000,000
Acquisition of land		3,377,000
Acquisition of manufacturing assets		$ 9,623,000
Procter and Gamble Company [Member] | Brazil [Member]
Business And Asset Acquisition [Line Items]
Capacity of production facility purchased in connection with acquisition | T					30,000
Acquisition purchase price					$ 5,133,000
Acquisition of property, plant and equipment					6,007,000
Acquisition of liabilities					874,000
Acquisition of intangible assets					0
Goodwill					$ 0
Bayer Material Science [Member]
Business And Asset Acquisition [Line Items]
Capacity of production facility purchased in connection with acquisition | T	21,000
Acquisition purchase price	$ 68,212,000
Acquisition of property, plant and equipment	37,000,000
Acquisition of intangible assets	17,800,000
Goodwill	4,642,000
Business acquisition cash paid	61,067,000
Business acquisition consideration payable for inventory				7,145,000
Acquisition-related costs incurred				270,000
Bayer Material Science [Member] | Acquisition Related Expenses [Member]
Business And Asset Acquisition [Line Items]
Nonrecurring adjustments to pro forma net income				270,000
Bayer Material Science [Member] | Fair Value Adjustment to Acquisition Date Inventory [Member]
Business And Asset Acquisition [Line Items]
Nonrecurring adjustments to pro forma net income				$ 558,000
Bayer Material Science [Member] | Know-how [Member]
Business And Asset Acquisition [Line Items]
Acquisition of intangible assets	7,900,000
Amortization periods for the identifiable intangible assets at the time of acquisition		8 years
Bayer Material Science [Member] | Trademark and Trade Name [Member]
Business And Asset Acquisition [Line Items]
Acquisition of intangible assets	3,800,000
Amortization periods for the identifiable intangible assets at the time of acquisition		11 years
Bayer Material Science [Member] | Customer Relationships [Member]
Business And Asset Acquisition [Line Items]
Acquisition of intangible assets	$ 6,100,000
Amortization periods for the identifiable intangible assets at the time of acquisition		12 years