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Note 6 - Stock Option Plan (Details) - USD ($)
3 Months Ended 9 Months Ended 76 Months Ended
Feb. 17, 2015
May. 20, 2009
Sep. 30, 2015
Sep. 30, 2015
Sep. 30, 2015
2009 Equity Incentive Plan [Member]          
Note 6 - Stock Option Plan (Details) [Line Items]          
Maximum Fair Value of First Exercisable Stock Incentive Options   100,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         0
2009 Equity Incentive Plan [Member] | Common Stock [Member]          
Note 6 - Stock Option Plan (Details) [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   223,000      
Employee Stock Option [Member] | 2009 Equity Incentive Plan [Member]          
Note 6 - Stock Option Plan (Details) [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period   10 years      
Restricted Stock [Member]          
Note 6 - Stock Option Plan (Details) [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       19,500  
Allocated Share-based Compensation Expense     $ 15,000 $ 53,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period       500  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value       $ 13,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options     $ 400,000 $ 400,000 $ 400,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       4 years 9 months  
Restricted Stock [Member] | Officers,Directors and Key Employees [Member]          
Note 6 - Stock Option Plan (Details) [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 19,500        
Share Price $ 24.50        
Stock Issued During Period, Value, Restricted Stock Award, Gross $ 478,000        
Restricted Stock [Member] | Vesting Each Year On July 1 Beginning July 1, 2016 [Member] | Officers,Directors and Key Employees [Member]          
Note 6 - Stock Option Plan (Details) [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 20.00%