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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Accounts Receivable, Net, Deferred Revenue and Deferred Sales Commissions [Table Text Block]
  

Accounts

      

Deferred

 
  

receivable,

  

Deferred

  

sales

 
  

net (1)

  

revenue

  

commissions

 
  

(in thousands)

 

Opening (January 1, 2020)

 $43,619  $60,600  $28,351 

Closing (December 31, 2020)

  53,749   74,688   31,943 

Increase/(decrease)

  10,130   14,088   3,592 
             

Opening (January 1, 2021)

 $53,749  $74,688  $31,943 

Closing (September 30, 2021)

  60,330   78,126   35,267 

Increase/(decrease)

  6,581   3,438   3,324 
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]
  For the Nine Months Ended  
  September 30, 2020 
  (in thousands) 
  Pre-Adjustment  Adjustment  Post-Adjustment 
Cost of services $19,289  $316  $19,605 
Gross profit  76,031   (316)  75,715 
Sales and marketing  40,654   9,227   49,881 
General and administrative  30,656   (9,738)  20,918 
Research and development  8,564   196   8,760