Senior Leverage Ratio and Total Leverage Ratio Requirements and Actual Amounts (Detail)	Feb. 28, 2014
Covenant Requirement | Maximum
Line of Credit Facility [Line Items]
Maximum Senior Leverage Ratio	3.25
Maximum Total Leverage Ratio	4.0
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	2.51
Maximum Total Leverage Ratio	2.51
Actual | Minimum
Line of Credit Facility [Line Items]
Minimum Fixed Charge Coverage Ratio	1.58