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Note 3 - Basic and Diluted Shares - Antidilutive Securities (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Basic and diluted (in shares) 18,852,479 18,778,187 18,831,499 18,764.271
Potentially dilutive (in shares) 27,500 67,448 27,500 67,448