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Note 7 - Debt, Credit Facility and Leases (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Long-Term Debt Instruments [Table Text Block]
  

June 30, 2022

 
  

Senior Notes

  

IQ Notes

  

Total

 

Principal

 $475,000  $37,433  $512,433 

Unamortized discount/premium and issuance costs

  (5,096)  504   (4,592)

Long-term debt balance

 $469,904  $37,937  $507,841 
  

December 31, 2021

 
  

Senior Notes

  

IQ Notes

  

Total

 

Principal

 $475,000  $38,051  $513,051 

Unamortized discount/premium and issuance costs

  (5,552)  596   (4,956)

Long-term debt balance

 $469,448  $38,647  $508,095 
Schedule of Maturities of Long Term Debt and Finance and Operating Lease Liabilities [Table Text Block]

Twelve-month
period ending
June 30,

 

Senior Notes

  

IQ Notes

  

Finance Leases

  

Operating Leases

 

2023

 $34,438  $2,441  $6,424  $3,011 

2024

  34,438   2,441   5,220   2,041 

2025

  34,438   2,441   3,070   1,072 

2026

  34,438   37,528   1,213   1,059 

2027

  34,438         1,010 

Thereafter

  496,521         6,043 

Total

 $668,711  $44,851  $15,927  $14,236