Goodwill and Intangible Assets (Additional Information) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
Contingent consideration as percentage of revenue for acquisition	4.00%
Goodwill	$ 18,589,000	$ 18,282,000	$ 18,059,000
Amortization of Intangible Assets	400,000	800,000	900,000
Finite-Lived Intangible Asset, Useful Life	10 years
Carrying Values Of Acquisition Related Intangibles	4,700,000
Goodwill, Purchase Accounting Adjustments	100,000	100,000
Period One [Member]
Goodwill [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	400,000
Period Two [Member]
Goodwill [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	300,000
Performance Materials Segment [Member]
Goodwill [Line Items]
Goodwill	13,900,000
Other Products and Services Segment [Member]
Goodwill [Line Items]
Goodwill	4,660,000	4,660,000
Other Products and Services Segment [Member] | Life Sciences Vital Fluids
Goodwill [Line Items]
Goodwill	4,700,000
VF reporting unit [Member]
Goodwill [Line Items]
Goodwill, Fair Value Disclosure	4,700,000
Goodwill Excess Of Fair Value Over Carrying Value Percentage	20.00%
PM reporting unit [Member]
Goodwill [Line Items]
Goodwill, Fair Value Disclosure	$ 13,900,000