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Note 5 - Stock-Based Compensation (Details) (USD $)
6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Stock Options and Restricted Stock [Member]
Jun. 30, 2012
Stock Options and Restricted Stock [Member]
Jun. 30, 2013
Stock Options and Restricted Stock [Member]
Jun. 30, 2012
Stock Options and Restricted Stock [Member]
Aug. 26, 2011
The 2011 Stock Incentive Plan [Member]
Note 5 - Stock-Based Compensation (Details) [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)             1,000,000
Unvested Restricted Shares Outstanding (in Shares) 3,314,090            
Share-based Compensation $ 449,000 $ 828,000 $ 204,000 $ 170,000 $ 449,000 $ 759,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 1,200,000