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Note 9 - Stock Option and Stock Plans (Tables)
12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Stock Plans *

 

Issue Date Range

 

Total Shares

Authorized

   

Shares

Issued

   

Shares

Remaining

 

2008 Stock Incentive Plan

 

5/23/08

–  10/11/11     600,000       463,420       136,580  

Stock Option Plans *

 

Issue Date Range

 

Total Options Authorized**

   

Options

Issued

   

Options

Remaining

 

2009A Officers, Directors, Employees and Consultants Nonqualified Stock Option Plan *** Expired 12/31/14

 

04/30/09

–  10/27/11     20,000,000       5,381,792       14,618,208