Annual report pursuant to Section 13 and 15(d)

Note 2 - Long-term Debt - Components of Long-term Debt (Details)

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Note 2 - Long-term Debt - Components of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Oct. 18, 2018
Debt instrument $ 730,000 $ 646,000  
Total long-term debt 719,533 633,535  
Credit Agreement [Member]      
Debt instrument [1] 105,000 21,000  
Total long-term debt 105,000 21,000  
Senior Second Lien Notes Due November 2023 [Member]      
Debt instrument [1] 614,533 612,535  
Principal 625,000 625,000 $ 625,000
Unamortized debt issuance costs (10,467) (12,465)  
Total long-term debt $ 614,533 $ 612,535  
[1] Defined below