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Note 11 - Share-Based Compensation (Details) (USD $)
3 Months Ended 3 Months Ended 15 Months Ended
Nov. 20, 2013
Aug. 28, 2013
Nov. 20, 2013
Restricted Stock Units (RSUs) [Member]
Nov. 20, 2013
Non Employee Directors Stock Plan [Member]
Nov. 21, 2012
Non Employee Directors Stock Plan [Member]
Nov. 20, 2013
Non Employee Directors Stock Plan [Member]
To Date [Member]
Nov. 20, 2013
Non Employee Directors Stock Plan [Member]
Minimum [Member]
Nov. 20, 2013
Non Employee Directors Stock Plan [Member]
Maximum [Member]
Nov. 20, 2013
Employee Stock Plan [Member]
Third Anniversary [Member]
Nov. 20, 2013
Employee Stock Plan [Member]
Nov. 21, 2013
Employee Stock Plan [Member]
Nov. 20, 2013
Employee Stock Plan [Member]
Minimum [Member]
Nov. 20, 2013
Employee Stock Plan [Member]
Maximum [Member]
Note 11 - Share-Based Compensation (Details) [Line Items]                          
Number of Stock Plans 2                        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized       1,100,000           2,600,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures           600,000       4,600,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period       100,000                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant       600,000           1,000,000      
Allocated Share-based Compensation Expense (in Dollars)       $ 130,000 $ 27,000         $ 200,000 $ 100,000    
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Granted During Period                   3,000,000      
Percentage Of Vesting In First Anniversary       100.00%           50.00%      
Share Based Compensation Arrangement By Share Based Payment Award Award Expiration Period       ten         ten six      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 839,336 882,768   24,000                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 4.92 $ 5.23         $ 4.47 $ 6.45          
Percentage Of Vesting Benefit Plan                   25.00%      
Percentage Of Vesting In Second Anniversary                   25.00%      
Percentage Of Vesting In Third Anniversary                   25.00%      
Option To Purchase Common Stock Shares                   815,336      
Company Common Stock At Purchase Price Per Share (in Dollars per share)                       $ 3.44 $ 11.10
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years                    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options (in Dollars)     $ 1,300,000                    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     1 year 328 days                    
Restricted Stock And Unit Awards Granted To Named Executive Officers Percentage       20.00%