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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
   
Year Ended December 31,
 
(In thousands)
 
2019
   
2018
 
Beginning balance
  $
1,751
    $
1,624
 
Charges to expenses
   
2,550
     
462
 
Write-offs
   
(2,334
)    
(335
)
Ending balance
  $
1,967
    $
1,751
 
Property, Plant and Equipment, Useful Life [Table Text Block]
   
Years
 
Computer and network equipment
 
 
5
 
Furniture, fixtures and office equipment
 
 
7
 
Leasehold improvements
 
 
6-7