Annual report pursuant to Section 13 and 15(d)

Note 7 - Stock-based Compensation (Details Textual)

v3.7.0.1
Note 7 - Stock-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended 61 Months Ended
Jul. 29, 2015
Aug. 31, 2016
Aug. 31, 2015
Jun. 27, 2010
Apr. 02, 2017
Apr. 03, 2016
Jul. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period         10 years 10 years  
Allocated Share-based Compensation Expense         $ 604,000 $ 906,000  
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount         0    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value         214,000 300,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value         137,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value         137,000    
Proceeds from Stock Options Exercised         0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number             105,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized         $ 334,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition         213 days    
Employee Stock Option [Member]              
Allocated Share-based Compensation Expense         $ 110,000 144,000  
Payments Related to Tax Withholding for Share-based Compensation         $ 75,000 $ 118,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition         192 days    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         2 years    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options         $ 80,000    
Restricted Stock [Member] | Non Employee Directors [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value   $ 281,000 $ 226,000        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period   28,000 28,000        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         2 years    
Restricted Stock [Member] | Employee [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       345,000      
Share Base Compensation Arrangement by Share Based Payment Award Equity Instrument Other Than Options Grants in Period Total Grant Date Fair Value       $ 1,200,000      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 240,000            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested $ 1,900,000            
Payments Related to Tax Withholding for Share-based Compensation $ 948,000            
Performance Shares [Member]              
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition         3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         2 years    
The 2014 Omnibus Equity Compensation Plan [Member]              
Common Stock, Capital Shares Reserved for Future Issuance         814,000    
The 2014 Omnibus Equity Compensation Plan [Member] | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period         10 years