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Note 10 - Stockholders' Equity (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Stockholders' Equity Note [Abstract]        
Allocated Share-based Compensation Expense $ 259,000 $ 166,000 $ 739,000 $ 429,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in Shares) 22,962   160,032  
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in Shares)     100,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options 1,900,000   1,900,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     2 years 255 days  
Proceeds from Stock Options Exercised     $ 26,170 $ 66,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in Shares)     275,648  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in Shares) 7,500   7,500