Annual report pursuant to Section 13 and 15(d)

Debt - Additional Information (Detail)

v3.20.2
Debt - Additional Information (Detail)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
Aug. 31, 2020
USD ($)
Aug. 31, 2020
USD ($)
Aug. 31, 2019
USD ($)
Aug. 31, 2018
USD ($)
Feb. 28, 2019
USD ($)
Apr. 16, 2012
USD ($)
Debt Instrument [Line Items]              
Long-term Debt   $ 255,000 $ 255,000 $ 462,559      
Cash interest payments     18,700 26,300 $ 28,800    
Long-term Debt, Current Maturities   0 0 (7,500)      
Long-term Debt, net   255,000 255,000 452,945      
Borrowings on revolving credit facility     (395,000) 0 $ 0    
Senior Credit Facility - Revolver | Senior Credit Facility              
Debt Instrument [Line Items]              
Long-term Debt   255,000 255,000 0      
Senior Credit Facility - Term Loan | Senior Credit Facility              
Debt Instrument [Line Items]              
Long-term Debt   0 0 $ 175,000      
5.625% Senior Notes | Senior Notes              
Debt Instrument [Line Items]              
Face amount             $ 300,000
Debt instrument, interest rate       5.625%     5.625%
5.625% Senior Notes Carrying Value   $ 0 $ 0 $ 287,559      
Minimum | 5.625% Senior Notes | Senior Notes              
Debt Instrument [Line Items]              
Debt Redemption Price As Percentage Of Principal             100.00%
Maximum              
Debt Instrument [Line Items]              
Leverage ratio   3.75 3.75        
Adjusted Leverage Ratio   4.25 4.25        
LIBOR              
Debt Instrument [Line Items]              
Long-term Debt   $ 180,000 $ 180,000        
Senior Credit Facility              
Debt Instrument [Line Items]              
Senior credit facility expansion option, available   $ 300,000 $ 300,000        
Senior Credit Facility | Minimum              
Debt Instrument [Line Items]              
Fixed charge coverage ratio   3.5 3.5        
Adjusted Fixed Charge Coverage Ratio   3.0 3.0        
Senior Credit Facility | LIBOR | Minimum              
Debt Instrument [Line Items]              
Debt instrument interest rate over variable rate     1.125%        
Senior Credit Facility | LIBOR | Maximum              
Debt Instrument [Line Items]              
Debt instrument interest rate over variable rate     2.00%        
Senior Credit Facility | Base Rate | Minimum              
Debt Instrument [Line Items]              
Debt instrument interest rate over variable rate     0.125%        
Senior Credit Facility | Base Rate | Maximum              
Debt Instrument [Line Items]              
Debt instrument interest rate over variable rate     1.00%        
Senior Credit Facility - Term Loan              
Debt Instrument [Line Items]              
Maximum borrowing capacity   $ 200,000 $ 200,000        
Senior credit facility expansion option, available   200,000 200,000        
Debt Issuance Costs, Noncurrent, Net   600 600        
Senior Credit Facility - Revolver              
Debt Instrument [Line Items]              
Maximum borrowing capacity   400,000 400,000     $ 300,000  
Unused credit line   139,900 139,900        
Borrowings on revolving credit facility $ 295,000   255,000        
Debt Issuance Costs, Noncurrent, Net   $ 1,000 $ 1,000        
Senior Credit Facility - Revolver | Minimum              
Debt Instrument [Line Items]              
Percentage of non-use fee, annually   0.15%          
Senior Credit Facility - Revolver | Maximum              
Debt Instrument [Line Items]              
Percentage of non-use fee, annually   0.30%