Long-term Debt - Schedule of Maximum Leverage Ratio (Detail) - Two Thousand Fourteen Credit Agreement	May. 31, 2015
Covenant Requirement
Line of Credit Facility
Maximum Total Leverage Ratio	6.75
Minimum Interest Coverage Ratio	2.0
Actual Results
Line of Credit Facility
Maximum Total Leverage Ratio	5.56
Minimum Interest Coverage Ratio	2.96

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