Long-term Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				12 Months Ended			12 Months Ended				12 Months Ended		3 Months Ended			3 Months Ended		0 Months Ended
	Feb. 28, 2014	Nov. 30, 2013	Aug. 16, 2012	May 30, 2012	Nov. 30, 2013 Minimum [Member]	Feb. 28, 2014 Minimum [Member]	May 30, 2012 Minimum [Member]	Nov. 30, 2013 Minimum [Member] Till November 30, 2014 [Member]	Nov. 30, 2013 Minimum [Member] Thereafter [Member]	Nov. 30, 2013 Maximum [Member]	May 30, 2012 Maximum [Member]	Nov. 30, 2013 Maximum [Member] Till November 30, 2014 [Member]	Nov. 30, 2013 Maximum [Member] Thereafter [Member]	Feb. 28, 2014 Senior Credit Facility [Member] BasisPoint	Feb. 28, 2014 Revolving Credit Facility [Member] BasisPoint	Feb. 28, 2014 Convertible Subordinated Debentures, Bearing Interest at 4.0625% Maturing in December 2034 [Member]	Feb. 28, 2014 Convertible Subordinated Debentures, Bearing Interest at 4.0625% Maturing in December 2034 [Member] Minimum [Member]	Feb. 28, 2014 Convertible Subordinated Debentures, Bearing Interest at 4.0625% Maturing in December 2034 [Member] Maximum [Member]	Jan. 14, 2013 Third Amendment [Member]
Debt Instrument [Line Items]
Term loan borrowings under revolving credit facility				$ 50.0
Sale leasebacks							20.0				30.0
Second lien indebtedness			510
Maximum term loan to draw			50
Senior Credit Facility aggregate principal amount																			250.0
Term loan facility principal amount	41.9	42.5																	50.0
Revolving credit facility aggregate principal amount																			150.0
Term loan borrowing under revolving credit facility																			50.0
Term of revolving credit facility																			5 years
Term of loan facility																			5 years
Standby letters of credit	100.0
Swingline loans	5.0
Term loan facility amortize percentage						5.00%
Outstanding letters of credit	58.1
Standby letters of credit outstanding	100.0
Outstanding under the term loan facility	44.4
Interest at LIBOR plus basis points														3.50%	3.50%
Commitment fee basis points														50
Interest rate addition to base rate														2.50%
Debt instrument, fronting fee per annum, basis points															25
Percentage of equity interests owned or held by the loan parties	66.00%
Percentage of non-voting stock owned or held by the loan parties	100.00%
Financial covenants that the borrower maintains, net of cash										100.0
Maximum total leverage ratio								4.25	4.00			1.00	1.00
Minimum interest coverage ratio					2.40					1.00
Debentures repurchased, principal amount																$ 4.5
Debentures price range																	210.00%	212.00%
Debt instrument, interest rate stated percentage																4.0625%