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Note 12 - Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
   
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
Accumulated
    
 
 
 
   
 
 
 
  
 
 
 
  
Additional
    
Retained
    
other
    
Total
  
   
Common stock
    
paid in
    
earnings
    
comprehensive
    
stockholders'
  
   
Number
    
Amount
    
capital
    
(deficit)
    
income (loss)
    
equity
  
                                                 
Balances, March 31, 2017
    
10,504,152
     $
14,783,156
     $
2,160,720
     $
22,833,503
     $
204,763
     $
39,982,142
  
Exercise of stock options
    
66,746
      
342,170
      
(257,201
 )    
-
      
-
      
84,969
  
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
    
(18,497
 )    
-
      
(609,308
 )    
-
      
-
      
(609,308
 )
Stock-based compensation (note 13)
    
-
      
-
      
313,265
      
-
      
-
      
313,265
  
Net income
    
-
      
-
      
-
      
5,241,484
      
-
      
5,241,484
  
Accretion of redeemable non-controlling interest in Ting
Virginia, LLC.
    
-
      
-
      
-
      
(12,549
 )    
-
      
(12,549
 )
Other comprehensive income (loss)
    
-
      
-
      
-
      
-
      
125,343
      
125,343
  
Balances, June 30, 2017
    
10,552,401
     $
15,125,326
     $
1,607,476
     $
28,062,438
     $
330,106
     $
45,125,346
  
   
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
Accumulated
    
 
 
 
   
 
 
 
  
 
 
 
  
Additional
    
Retained
    
other
    
Total
  
   
Common stock
    
paid in
    
earnings
    
comprehensive
    
stockholders'
  
   
Number
    
Amount
    
capital
    
(deficit)
    
income (loss)
    
equity
  
                                                 
Balances, December 31, 2016
    
10,461,574
     $
14,460,500
     $
2,857,921
     $
20,399,511
     $
99,154
     $
37,817,086
  
Exercise of stock options
    
135,622
      
664,826
      
(559,989
 )    
-
      
-
      
104,837
  
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
    
(44,795
 )    
-
      
(1,321,541
 )    
-
      
-
      
(1,321,541
 )
Stock-based compensation (note 13)
    
-
      
-
      
631,085
      
-
      
-
      
631,085
  
Net income
    
-
      
-
      
-
      
7,687,975
      
-
      
7,687,975
  
Accretion of redeemable non-controlling interest in Ting
Virginia, LLC.
    
-
      
-
      
-
      
(25,048
 )    
-
      
(25,048
 )
Other comprehensive income (loss)
    
-
      
-
      
-
      
-
      
230,952
      
230,952
  
Balances, June 30, 2017
    
10,552,401
     $
15,125,326
     $
1,607,476
     $
28,062,438
     $
330,106
     $
45,125,346