Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Schedule of Accrued Liabilities (Parenthetical) (Detail)

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Accrued Expenses - Schedule of Accrued Liabilities (Parenthetical) (Detail)
Nov. 30, 2012
Accounts Payable And Accrued Liabilities [Line Items]  
Maximum percentage of total current liabilities at which all other liabilities did not exceed 5.00%