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Note 15 - Revenue (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Revenue from External Customers by Geographic Areas [Table Text Block]
  

Year Ended December 31,

 
  

2020

  

2019

  

2018

 

Net sales by geographic region:

            

United States

 $254,956  $252,797  $161,415 

Canada

  30,951   26,520   10,734 

Total

 $285,907  $279,317  $172,149 
Disaggregation of Revenue [Table Text Block]
  

Year Ended December 31,

 
  

2020

  

2019

  

2018

 
             

Over time

 $241,690  $279,317  $172,149 

Point in time

  44,217   -   - 

Net sales

 $285,907  $279,317  $172,149