Income (Loss) Per Share of Common Stock - Schedule of Potentially Dilutive Securities Excluded from Computation (Parenthetical) (Detail) (Convertible Subordinated Debentures, Bearing Interest at 4.0625% Maturing in December 2034 [Member])	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Convertible Subordinated Debentures, Bearing Interest at 4.0625% Maturing in December 2034 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest on debt instrument	4.0625%	4.0625%	4.0625%