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Note 17 - Subsequent Event (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
2 Months Ended 12 Months Ended
Jan. 22, 2016
Jan. 04, 2016
Feb. 29, 2016
Dec. 31, 2015
Dec. 31, 2014
Subsequent Event [Member] | Certain Executive Officers, Directors, and Key Employees [Member] | Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]          
Stock Issued During Period, Shares, Restricted Stock Award, Gross 22,500        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options $ 98        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 100.00%        
Subsequent Event [Member] | Certain Executive Officers, Directors, and Key Employees [Member] | Restricted Stock [Member]          
Stock Issued During Period, Shares, Restricted Stock Award, Gross 63,900        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 4.37        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options $ 279        
Subsequent Event [Member] | Executive Officer [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years        
Subsequent Event [Member] | Executive Officer [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 1.43        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 19,800        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 28        
Subsequent Event [Member] | Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options $ 181        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years        
Subsequent Event [Member]          
Restructuring Charges   $ 99      
Stock Repurchased and Retired During Period, Shares     126,356    
Stock Repurchased and Retired During Period, Value     $ 512    
Payments for Brokerage Fees     $ 3    
Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       4 years  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       0 0
Stock Repurchased and Retired During Period, Shares       41,332  
Stock Repurchased and Retired During Period, Value       $ 155  
Payments for Brokerage Fees       $ 1