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Line of Credit and Long-Term Debt (Detail) - USD ($)
$ in Thousands
Aug. 31, 2019
Feb. 28, 2019
Debt Instrument [Line Items]    
Notes and Mortgage Payable to bank $ 23
Less current maturities (23)
Long-term debt, less current maturities
Mortgage payable to bank    
Debt Instrument [Line Items]    
Notes and Mortgage Payable to bank $ 23