Debt and Credit Lines - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended															3 Months Ended		0 Months Ended				12 Months Ended	0 Months Ended	3 Months Ended	12 Months Ended				0 Months Ended	3 Months Ended											3 Months Ended	12 Months Ended	3 Months Ended											3 Months Ended
	Mar. 07, 2013	Feb. 28, 2013	Feb. 29, 2012	Nov. 30, 2012	Feb. 28, 2013 Foreign line of credit	Feb. 28, 2013 Domestic Line of Credit	Feb. 28, 2013 Foreign subsidiaries borrowings	Nov. 30, 2012 Foreign subsidiaries borrowings	Feb. 28, 2013 Foreign subsidiaries borrowings Minimum	Nov. 30, 2012 Foreign subsidiaries borrowings Minimum	Feb. 28, 2013 Foreign subsidiaries borrowings Maximum	Nov. 30, 2012 Foreign subsidiaries borrowings Maximum	Feb. 28, 2013 Foreign subsidiaries borrowings Unsecured Debt	Nov. 30, 2012 Foreign subsidiaries borrowings Unsecured Debt	Feb. 28, 2013 Foreign subsidiaries borrowings Secured Debt	Nov. 30, 2012 Foreign subsidiaries borrowings Secured Debt	Feb. 28, 2013 Senior Unsecured Notes	Nov. 30, 2012 Senior Unsecured Notes	Dec. 09, 2010 Term Loan B	Mar. 07, 2013 Term Loan B	Feb. 28, 2013 Term Loan B	Nov. 30, 2012 Term Loan B	Nov. 30, 2013 Term Loan [Member]	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member]	Feb. 28, 2013 Term Loan [Member] New Credit Facility [Member]	Nov. 30, 2013 Term Loan [Member] New Credit Facility [Member]	Nov. 30, 2012 Term Loan [Member] New Credit Facility [Member]	May 31, 2012 Term Loan [Member] New Credit Facility [Member]	Feb. 28, 2013 Term Loan [Member] New Credit Facility [Member] After December 1, 2014	Mar. 07, 2013 Term Loan [Member] New Credit Facility [Member] London Interbank Offered Rate [Member]	Feb. 28, 2013 Term Loan [Member] New Credit Facility [Member] London Interbank Offered Rate [Member]	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member] Eurodollar Rate	Mar. 07, 2013 Term Loan [Member] New Credit Facility [Member] Eurodollar Rate Scenario One [Member]	Feb. 28, 2013 Term Loan [Member] New Credit Facility [Member] Eurodollar Rate Scenario One [Member]	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member] Eurodollar Rate Scenario One [Member]	Feb. 28, 2013 Term Loan [Member] New Credit Facility [Member] Federal Funds Effective Rate	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member] Federal Funds Effective Rate	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member] One Month Eurodollar Rate	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member] Base Rate	Feb. 28, 2013 Term Loan [Member] New Credit Facility [Member] Base Rate Scenario One [Member]	Dec. 09, 2010 Term Loan [Member] New Credit Facility [Member] Base Rate Scenario One [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility	Nov. 30, 2012 Senior Secured Revolving Credit Facility	Feb. 28, 2013 Senior Secured Revolving Credit Facility Minimum	Feb. 28, 2013 Senior Secured Revolving Credit Facility Scenario Two [Member] Minimum	Feb. 28, 2013 Senior Secured Revolving Credit Facility Scenario Three [Member] Minimum	Feb. 28, 2013 Senior Secured Revolving Credit Facility Scenario Three [Member] Maximum	Feb. 28, 2013 Senior Secured Revolving Credit Facility If average excess availability is less than $25 million Maximum	Feb. 28, 2013 Senior Secured Revolving Credit Facility Eurodollar Rate Scenario Two [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility Eurodollar Rate Scenario Three [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility Eurodollar Rate If average excess availability is less than $25 million	May 31, 2012 Senior Secured Revolving Credit Facility Eurodollar Rate If average excess availability is less than $25 million	Feb. 28, 2013 Senior Secured Revolving Credit Facility Base Rate Scenario Three [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility Base Rate If average excess availability is less than $25 million	Feb. 28, 2013 Senior Secured Revolving Credit Facility Commitments for unused credit lines Scenario Two [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility Commitments for unused credit lines Scenario Three [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility Commitments for unused credit lines If average excess availability is less than $25 million	Feb. 28, 2013 Senior Secured Revolving Credit Facility New Credit Facility [Member] Base Rate Scenario Two [Member]	Feb. 28, 2013 Senior Secured Revolving Credit Facility Commercial and Standby Letters of Credit	Feb. 28, 2013 Senior Secured Revolving Credit Facility Swingline Loans
Debt Instrument [Line Items]
Loans Payable to Bank Current		$ 10,500,000		$ 9,600,000			$ 8,500,000	$ 7,600,000					$ 4,500,000	$ 3,600,000	$ 4,000,000	$ 4,000,000					$ 2,000,000	$ 2,000,000
Debt Instrument, Covenant Compliance, Ebitda																											97,400,000
Line of credit, maximum borrowing capacity					16,500,000																																					100,000,000																	15,000,000	10,000,000
Letters of credit, amount outstanding					4,000,000	2,200,000
Senior notes		250,000,000		250,000,000													250,000,000
Long-term debt, interest rate									3.27%	5.40%	12.85%	12.70%					7.875%	7.875%			5.50%	5.50%
Long-term debt, maturity date																	Nov. 01, 2018								May 31, 2017
Long-term debt, earliest redemption date																	Oct. 31, 2014
Term Loan B																				195,500,000	200,000,000	200,000,000
LIBOR, floor																														1.25%	1.75%
Interest rate, spread on variable rate																																4.00%	3.00%	3.75%	3.75%	0.50%	0.50%	1.00%	3.00%										2.25%	2.50%	2.75%	2.75%	1.50%	1.75%		0.50%	0.375%	1.25%
Base rate, description																								The base interest rate is a fluctuating rate equal to the higher of (i) the Prime Rate, (ii) the sum of the Federal Funds Effective Rate plus 0.50% or (iii) the one-month eurodollar rate plus 1.0%.																			The alternate base interest rate is a fluctuating rate equal to the higher of the prime rate or the sum of the federal funds effective rate plus 0.50%.
Net leverage ratio																												3.40												2.75	2.75
Annual principal payments																										2,000,000
Principal payments, frequency of payment																							quarterly
Line of credit, expiration date																																										Dec. 08, 2015
Additional borrowing capacity, description																											The Term Loan provides for additional borrowings of the greater of $75 million or an amount based on a senior secured leverage ratio, as defined in the Term Loan, provided that certain requirements are met including an interest coverage ratio of 2.0.
Additional borrowing capacity, minimum																									75,000,000
Interest coverage ratio																			2.0
Term Loan, covenant terms																											The Term Loan requires the Company to maintain an initial senior secured net leverage ratio of less than 3.25 to 1, which decreases annually by 25 basis points through December 1, 2014 and then remains at 2.5 to 1 thereafter.																The Facility contains affirmative and negative covenants, similar to the Term Loan, including limitations on additional debt, certain investments and acquisitions outside of the Company's line of business. If the average excess availability of the Facility falls below $25 million during any fiscal quarter, the Company must then maintain a fixed charge coverage ratio greater than 1.1 to 1 as defined in the agreement.
Term Loan, covenant compliance																											The Company is in compliance with this covenant with a senior secured net leverage ratio of .8 at February 28, 2013.																The Company was in compliance with this requirement as the average excess availability did not fall below $25 million during the second quarter of 2012 and averaged $78.0 million.
Senior secured net leverage ratio, maximum																									3.25				2.5
Net leverage ratio, annual decrease through December 1, 2014																											0.25%
Senior secured net leverage ratio																									0.8
Debt Instrument, Covenant Compliance, Ebitda Under Threshold																											69,000,000
Unamortized original issue discount		1,300,000		1,400,000															2,000,000
Cash received from issuance of term loan																			198,000,000
Line of credit, maximum potential borrowing capacity																																										150,000,000
Average excess availability																																										78,000,000		25,000,000	50,000,000	25,000,000	50,000,000	25,000,000
Document Fiscal Year Focus		2013	2012
Fixed charge coverage ratio																																										1.1
Eligible inventory and receivables to support the borrowing base		80,400,000
Line of credit borrowing base																																										100,000,000
Line of credit, amount available for borrowing						78,100,000
Long-term debt, weighted-average interest rate		6.85%	6.97%
Deferred financing costs	900,000
Amortization of Financing Costs		600,000	700,000
Deferred financing fees write-off	200,000
Long-term debt, fair value		471,400,000
Long-term debt		$ 454,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage																																																							0.625%