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Note 3 - Earnings Per Share (Detail) - Shares Used in Calculation of Earnings Per Share
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Weighted average common shares outstanding 2,167,711 1,894,207 2,077,027 1,847,945
Average treasury stock shares (189,530) (189,530) (189,530) (189,530)
Weighted average common shares and common stock equivalents used to calculate basic earnings per share 1,978,181 1,704,677 1,887,497 1,658,415
Additional common stock equivalents (stock options) used to calculate diluted earnings per share 5,682   4,236  
Weighted average common shares and common stock equivalents used to calculate diluted earnings per share 1,983,863 1,704,677 1,891,733 1,658,415