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Note 6 - Employee Stock Ownership Plan (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]
   
September 30,
   
December 31,
 
   
2016
   
2015
 
Shares allocated
    59,780       55,964  
Shares withdrawn from the plan
    (18,497 )     (18,497 )
Unallocated shares
    16,534       20,350  
Total ESOP shares
    57,817       57,817  
Fair value of unallocated shares
  $ 224,876     $ 204,518