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Share-Based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 31, 2019
Sep. 01, 2018
Aug. 31, 2019
Sep. 01, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation     $ 3,200 $ 3,119
Cash proceeds from exercise of stock options   $ 200    
Aggregate intrinsic value of securities   $ 600    
Total unrecognized compensation cost related to nonvested share $ 8,500   8,500  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average period, Nonvested 22 months      
Total fair value of shares vested     $ 4,900