Annual report pursuant to Section 13 and 15(d)

Note 3 - Fair Value Measurements - Carrying Value and Fair Value of Long-term Debt (Details)

v3.20.4
Note 3 - Fair Value Measurements - Carrying Value and Fair Value of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Long-term debt, carrying value $ 625,286 $ 719,533
Credit Agreement [Member]    
Long-term debt, carrying value 80,000 105,000
Long-term debt, fair value 80,000 105,000
Senior Second Lien Notes Due November 2023 [Member]    
Long-term debt, carrying value 545,286 614,533
Long-term debt, fair value $ 393,352 $ 597,188