Debt - Additional Information (Detail) (USD $)
|
0 Months Ended | 12 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Apr. 03, 2012
|
Aug. 31, 2014
|
Aug. 31, 2013
|
Aug. 31, 2012
|
Aug. 31, 2011
|
Aug. 31, 2014
5.625% Senior Notes
Senior Notes
|
Aug. 31, 2013
5.625% Senior Notes
Senior Notes
|
Aug. 31, 2012
5.625% Senior Notes
Senior Notes
|
Apr. 16, 2012
5.625% Senior Notes
Senior Notes
|
Aug. 31, 2012
6.875% Senior Notes
Senior Notes
|
Apr. 16, 2012
6.875% Senior Notes
Senior Notes
|
Apr. 30, 2012
2% Converitble Notes
Convertible Notes
|
Mar. 31, 2012
2% Converitble Notes
Convertible Notes
|
Aug. 31, 2013
2% Converitble Notes
Convertible Notes
|
Aug. 31, 2012
2% Converitble Notes
Convertible Notes
|
Nov. 30, 2003
2% Converitble Notes
Convertible Notes
|
Apr. 16, 2012
Minimum
6.875% Senior Notes
Senior Notes
|
Apr. 16, 2012
Maximum
6.875% Senior Notes
Senior Notes
|
Aug. 31, 2014
Senior Credit Facility - Term Loan
|
Aug. 31, 2011
Senior Credit Facility - Term Loan
|
Aug. 31, 2014
Senior Credit Facility - Term Loan
Starting on September 30, 2014
|
Aug. 31, 2014
Senior Credit Facility - Term Loan
Starting on September 30, 2015
|
Aug. 31, 2014
Senior Credit Facility - Revolver
|
Aug. 31, 2014
Senior Credit Facility - Revolver
Minimum
|
Aug. 31, 2014
Senior Credit Facility - Revolver
Maximum
|
Aug. 31, 2014
Senior Credit Facility
covenant
|
Aug. 31, 2014
Senior Credit Facility
Minimum
|
Aug. 31, 2014
Senior Credit Facility
Maximum
|
Aug. 31, 2014
Senior Credit Facility
LIBOR
|
Aug. 31, 2014
Senior Credit Facility
LIBOR
Minimum
|
Aug. 31, 2014
Senior Credit Facility
LIBOR
Maximum
|
Aug. 31, 2014
Senior Credit Facility
Base Rate
Minimum
|
Aug. 31, 2014
Senior Credit Facility
Base Rate
Maximum
|
|
Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||
Maximum borrowing capacity | $ 90,000,000 | $ 600,000,000.0 | |||||||||||||||||||||||||||||||
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 | 1.44% | ||||||||||||||||||||||||||||||||
Percentage of non-use fee, annually | 0.15% | 0.40% | |||||||||||||||||||||||||||||||
Unused credit line | 593,200,000 | ||||||||||||||||||||||||||||||||
Quarterly installments, payable on term loan | 1,100,000 | 2,300,000 | |||||||||||||||||||||||||||||||
Number of financial covenants | 2 | ||||||||||||||||||||||||||||||||
Leverage ratio | 3.75 | ||||||||||||||||||||||||||||||||
Fixed charge coverage ratio | 3.50 | ||||||||||||||||||||||||||||||||
Face amount | 300,000,000 | 300,000,000.0 | 250,000,000 | 150,000,000.0 | |||||||||||||||||||||||||||||
Debt instrument, interest rate | 5.625% | 5.625% | 5.625% | 5.625% | 6.875% | 6.875% | 2.00% | 2.00% | |||||||||||||||||||||||||
Debt Redemption Price As Percentage Of Principal | 104.00% | 100.00% | 102.80% | ||||||||||||||||||||||||||||||
Senior Notes | 260,400,000 | ||||||||||||||||||||||||||||||||
Debt conversion converted remaining instrument amount | 117,600,000 | ||||||||||||||||||||||||||||||||
Number of shares issued due to calling of convertible notes | 5,951,440 | ||||||||||||||||||||||||||||||||
Repurchases of 2% Convertible Notes | 0 | 0 | 102,000 | 100,000 | |||||||||||||||||||||||||||||
Prior income tax to be recaptured | 15,600,000 | ||||||||||||||||||||||||||||||||
Derivative, Notional Amount | 100,000,000 | ||||||||||||||||||||||||||||||||
Fixed interest rate of interest rate swap contracts | 2.06% | ||||||||||||||||||||||||||||||||
Senior Credit Facility | 100,000,000 | ||||||||||||||||||||||||||||||||
Other long term Liabilities | 4,100,000 | ||||||||||||||||||||||||||||||||
Debt refinancing costs | 0 | 0 | 16,830,000 | 16,830,000 | |||||||||||||||||||||||||||||
Tender premium | 10,400,000 | ||||||||||||||||||||||||||||||||
Write-off of deferred financing fees and debt discount | 2,300,000 | ||||||||||||||||||||||||||||||||
Loss on termination of interest rate swap agreements | 4,100,000 | ||||||||||||||||||||||||||||||||
Related tax benefit on debt refinancing charge | 6,300,000 | ||||||||||||||||||||||||||||||||
Cash interest payments | $ 21,000,000 | $ 21,000,000 | $ 26,000,000 |