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Note 3 - Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended June 30,
   
Six Months Ended June 30,
 
   
2018
   
2017
   
2018
   
2017
 
Net income
  $
353
   
*
    $
476
   
*
 
Basic potential common shares
                           
Weighted average shares outstanding
   
6,612,500
   
*
     
6,612,500
   
*
 
Weighted average unallocated Employee Stock Ownership Plan Shares
   
(250,863
)  
*
     
(252,483
)  
*
 
Basic weighted average shares outstanding
   
6,361,637
   
*
     
6,360,017
   
*
 
Dilutive potential common shares
   
-
   
*
     
-
   
*
 
Dilutve weighted average shares outstanding
   
6,361,637
   
*
     
6,360,017
   
*
 
Basic earnings per share
  $
0.06
   
*
    $
0.07
   
*
 
Diluted earnings per share
  $
0.06
   
*
    $
0.07
   
*