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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Financing Receivable, Allowance for Credit Loss [Table Text Block]
  

Year Ended December 31,

 

(In thousands)

 

2020

  

2019

 

Beginning balance

 $1,967  $1,751 

Charges to expenses

  269   2,550 

Write-offs

  (1,868)  (2,334)

Ending balance

 $368  $1,967 
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