Senior Leverage Ratio and Total Leverage Ratio Requirements and Actual Amounts (Detail)	Nov. 30, 2013
Covenant Requirement | Maximum
Line of Credit Facility [Line Items]
Maximum Senior Leverage Ratio	3.50
Maximum Total Leverage Ratio	4.00
Covenant Requirement | Minimum
Line of Credit Facility [Line Items]
Minimum Fixed Charge Coverage Ratio	1.25
Actual | Maximum
Line of Credit Facility [Line Items]
Maximum Senior Leverage Ratio	2.89
Maximum Total Leverage Ratio	2.89
Actual | Minimum
Line of Credit Facility [Line Items]
Minimum Fixed Charge Coverage Ratio	1.48