Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Fair Value Measurements - Carrying Value and Fair Value of Long-term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Long-term debt, carrying value $ 742,372 $ 625,286
Long-term debt, fair value 724,612 473,352
Term Loan [Member]    
Long-term debt, carrying value 195,385  
Long-term debt, fair value 199,615  
Credit Agreement [Member]    
Long-term debt, carrying value   80,000
Long-term debt, fair value   80,000
Senior Second Lien Notes Due November 2023 [Member]    
Long-term debt, carrying value 546,987 545,286
Long-term debt, fair value $ 524,997 $ 393,352