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Note 7 - Stock-Based Compensation (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Restricted Stock [Member]
Mar. 04, 2014
Stock Plan 2014 [Member]
Note 7 - Stock-Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)       500,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 378,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 109 days      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     4 years  
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount $ 0 $ 0