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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Schedule of Weighted Average Number of Shares [Table Text Block]
 
Three Months Ended
Sept. 30,
Nine Months Ended
Sept. 30,
 
2016
2015
2016
2015
Weighted average common shares outstanding - basic
    10,295,447       10,473,928       10,327,095       10,470,410  
Potentially dilutive securities:
                               
Unvested shares of restricted stock and stock options
    23,268       24,983       17,652       21,907  
Weighted average common shares and common share equivalents outstanding - diluted
    10,318,715       10,498,911       10,344,747       10,492,317  
                                 
Average number of potentially dilutive securities excluded from calculation
    19,800       -       18,277       -