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Debt - Additional Information (Detail) (USD $)
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3 Months Ended | 3 Months Ended | |||||||||||||
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May 31, 2014
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May 31, 2014
Minimum
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May 31, 2014
Maximum
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May 31, 2014
Libor Rate
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May 31, 2014
Libor Rate
Minimum
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May 31, 2014
Libor Rate
Maximum
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May 31, 2014
Base Rate
Minimum
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May 31, 2014
Base Rate
Maximum
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May 31, 2014
Revolving Credit Facility
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May 31, 2014
Senior Credit Facility - Term Loan
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May 31, 2014
Senior Credit Facility - Term Loan
Starting on September 30, 2014
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May 31, 2014
Senior Credit Facility - Term Loan
starting on September 30, 2015
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May 31, 2014
Line of Credit
Senior Credit Facility - Revolver
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May 31, 2014
Senior Notes
5.625% Senior Notes
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Apr. 16, 2012
Senior Notes
5.625% Senior Notes
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| Debt Instrument [Line Items] | |||||||||||||||
| Maximum borrowing capacity | $ 600,000,000 | $ 90,000,000 | |||||||||||||
| Senior credit facility expansion option, available | 350,000,000 | ||||||||||||||
| Debt instrument, interest rate over variable rate | 1.25% | 1.00% | 2.50% | 0.00% | 1.50% | ||||||||||
| Debt Instrument, actual interest rate | 1.45% | ||||||||||||||
| Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.15% | 0.40% | |||||||||||||
| Unused credit line | 592,800,000 | ||||||||||||||
| Quarterly installments, payable on term loan | 1,100,000 | 2,300,000 | |||||||||||||
| Leverage ratio | 3.75 | ||||||||||||||
| Interest coverage ratio | 3.50 | ||||||||||||||
| Face amount | $ 300,000,000 | $ 300,000,000 | |||||||||||||
| Debt instrument, interest rate | 5.625% | 5.625% | |||||||||||||