Segments - Additional Information (Detail)	9 Months Ended
Sep. 30, 2013 Segment	Sep. 30, 2013 Armand Products Company	Sep. 30, 2012 Armand Products Company	Sep. 30, 2013 Armakleen Company	Sep. 30, 2012 Armakleen Company	Sep. 30, 2013 Natronx LLC	Sep. 30, 2012 Natronx LLC
Segment Reporting Information [Line Items]
Number of reportable segments	3
Percentage of ownership interest		50.00%	50.00%	50.00%	50.00%	33.33%	33.33%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant