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Lines of Credit and Long-Term Debt - Additional Information (Detail) - USD ($)
$ in Thousands
Feb. 28, 2017
Sep. 14, 2016
Feb. 29, 2016
Debt Instrument [Line Items]      
Long-term debt, less current maturities $ 77   $ 131
Line of credit   $ 500  
Line of credit, Current balance 237    
Long-term Debt      
Debt Instrument [Line Items]      
Long-term debt, less current maturities 100    
Brand Banking Company      
Debt Instrument [Line Items]      
Line of credit 500    
Line of credit, Current balance $ 200