Basis of Presentation - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Feb. 28, 2013 segment	Nov. 30, 2012 segment
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of reportable business segments	2	2
Performance Chemicals
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of Product Lines		2
Engineered Surfaces [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of Product Lines		2