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Note 13 - Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2018
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, December 31, 2017
    
10,583,879
     $
15,368,161
     $
2,166,768
     $
42,675,805
     $
-
     $
60,210,734
  
Impact of Adoption of ASU 2014-09
    
-
      
-
      
-
      
1,062,952
      
-
      
1,062,952
  
Balance on January 1, 2018
    
10,583,879
      
15,368,161
      
2,166,768
      
43,738,757
      
-
      
61,273,686
  
Exercise of stock options
    
12,563
      
57,943
      
(50,742
 )    
-
      
-
      
7,201
  
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
    
(4,327
 )    
 
      
(147,068
 )    
-
      
-
      
(147,068
 )
Stock-based compensation (note 15)
    
-
      
-
      
578,182
      
-
      
-
      
578,182
  
Net income
    
-
      
-
      
-
      
3,743,692
      
-
      
3,743,692
  
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
    
-
      
-
      
-
      
(63,610
 )    
-
      
(63,610
 )
Other comprehensive income (loss)
    
-
      
-
      
-
      
-
      
17,425
      
17,425
  
Balances, March 31, 2018
    
10,592,115
     $
15,426,104
     $
2,547,140
     $
47,418,839
     $
17,425
     $
65,409,508