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Note 7 - Stockholders' Equity (Details) - USD ($)
9 Months Ended
Sep. 01, 2016
Sep. 01, 2015
Sep. 30, 2015
Dec. 31, 2014
Note 7 - Stockholders' Equity (Details) [Line Items]        
Treasury Stock, Shares, Acquired     0  
Treasury Stock, Shares     905,000 905,000
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)     $ 9.38  
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars)     $ 10,200,000  
Certain Officers and Employees [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, Restricted Stock Award, Gross     91,000  
Director [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, Restricted Stock Award, Gross     16,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars)     $ 555,000  
2014 Incentive Compensation Plan [Member] | Certain Officers and Employees [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, Restricted Stock Award, Gross     122,000  
Warrant [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, Share-based Compensation, Gross     20,000  
Employee Stock Option [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, Share-based Compensation, Gross     1,107,000  
Restricted Stock [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, Share-based Compensation, Gross     220,000  
Restricted Stock [Member] | Certain Officers and Employees [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars)     $ 3,700,000  
Restricted Stock [Member] | 2014 Incentive Compensation Plan [Member] | Certain Officers and Employees [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   50.00%    
Restricted Stock [Member] | Scenario, Forecast [Member] | 2014 Incentive Compensation Plan [Member] | Certain Officers and Employees [Member]        
Note 7 - Stockholders' Equity (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%