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Note 7 - Long-term Debt (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
  

2020

  

2019

 
  

(in thousands)

 

Line of credit with a bank—due July 1, 2022, and collateralized by accounts receivable (1)

  18,246   17,047 

Equipment financing (2)

  250,572   224,777 

Real estate financing (3)

  17,288   - 

Total long-term debt

  286,106   241,824 

Less current maturities

  (57,776)  (67,637)
         

Long-term debt—net of current maturities

 $228,330  $174,187 
Schedule of Maturities of Long-term Debt [Table Text Block]

2021

 $57,776 

2022

  72,681 

2023

  66,767 

2024

  43,116 

2025

  30,596 

2026

  7,921 

Thereafter

  7,249 
     

Total

 $286,106