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Note 15 - Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]
  

For the Nine Months Ended September 30,

 
  

2021

  

2020

 

Balance at beginning of period

 $473  $127 

Bad debt expense

     130 

Write-offs

  (432)  (47)

Other adjustments

  (2)  (36)

Balance at end of period

 $39  $174