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Note 3 - Earnings Per Share (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Note 3 - Earnings Per Share (Details) [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 58,581 88,354 58,581 88,354 79,693 88,774
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share) $ 17.55     $ 17.55    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share) $ 40.24     $ 40.24    
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 6,930 5,682 7,981 4,236    
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants   11,332   11,332    
Share Price (in Dollars per share)   $ 16   $ 16    
Employee Stock Option [Member]
            
Note 3 - Earnings Per Share (Details) [Line Items]            
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 29,633 17,536 49,394 9,000    
17.55 - 40.24 [Member]
            
Note 3 - Earnings Per Share (Details) [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 58,581 88,354 58,581 88,354