XML 49 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1
Share-Based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 02, 2017
Aug. 27, 2016
Sep. 02, 2017
Aug. 27, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation     $ 3,063 $ 2,935
Cash proceeds from exercise of stock options $ 800 $ 1,300    
Aggregate intrinsic value of securities 4,800 $ 4,500    
Total unrecognized compensation cost related to nonvested share $ 10,100   $ 10,100  
Document Period End Date     Sep. 02, 2017  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average period, Nonvested 23 months      
Total fair value of shares vested     $ 6,900