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Note 11 - Costs to Obtain and Fulfill a Contract (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Capitalized Contract Cost [Table Text Block]
   
Nine months ended
September 30,
2019
 
Balance, beginning of period
  $
106,527
 
Acquired in a business combination
1
   
10,318
 
Capitalization of costs
   
122,534
 
Amortization of costs
   
(126,288
)
Balance, end of period
  $
113,091