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Long-Term Debt (Detail) - USD ($)
$ in Thousands
Feb. 28, 2018
Feb. 28, 2017
Debt Instrument [Line Items]    
Total Credit Agreement debt $ 142,609  
Current maturities (16,037) $ (23,600)
Unamortized original issue discount (3,476) (7,038)
Total long-term debt 122,849 190,372
Revolver    
Debt Instrument [Line Items]    
Total Credit Agreement debt 9,000  
Term Loan    
Debt Instrument [Line Items]    
Total Credit Agreement debt 69,451  
2014 Credit Agreement    
Debt Instrument [Line Items]    
Total Credit Agreement debt 78,451 152,245
Unamortized original issue discount (1,800)  
Total long-term debt 78,400  
2014 Credit Agreement | Revolver    
Debt Instrument [Line Items]    
Total Credit Agreement debt 9,000 0
2014 Credit Agreement | Term Loan    
Debt Instrument [Line Items]    
Total Credit Agreement debt 69,451 152,245
Other nonrecourse debt [Member]    
Debt Instrument [Line Items]    
Nonrecourse debt 9,992 8,807
98.7 FM Nonrecourse Debt    
Debt Instrument [Line Items]    
Nonrecourse debt $ 53,919 $ 59,958