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Note 13 - Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30,
   
June 30,
 
   
2019
   
2018
   
2019
   
2018
 
                                 
Net income attributable to Alaska Communications
  $
35
    $
3,442
    $
262
    $
5,543
 
                                 
Weighted average common shares outstanding:
                               
Basic shares
   
53,799
     
53,111
     
53,591
     
52,897
 
Effect of stock-based compensation
   
770
     
777
     
1,008
     
932
 
Diluted shares
   
54,569
     
53,888
     
54,599
     
53,829
 
                                 
Net income per share attributable to Alaska Communications:
                               
Basic
  $
0.00
    $
0.06
    $
0.00
    $
0.10
 
Diluted
  $
0.00
    $
0.06
    $
0.00
    $
0.10