XML 74 R61.htm IDEA: XBRL DOCUMENT v3.21.2
Debt - 7.75% Senior Secured Notes Due 2025 (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 23, 2021
Dec. 21, 2017
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Debt Instrument [Line Items]          
Principal amount of long-term debt     $ 588,125   $ 731,523
Repayments of debt     $ 197,669 $ 88,208  
7.75% Senior Secured Notes due 2025          
Debt Instrument [Line Items]          
Debt instrument, interest rate (in percent)     7.75%   7.75%
Senior Notes | 7.75% Senior Secured Notes due 2025          
Debt Instrument [Line Items]          
Principal amount of long-term debt   $ 300,000 $ 298,000   $ 300,000
Proceeds from issuance of senior long-term debt   $ 289,200      
Unamortized discount (premium) and debt issuance costs, percentage (in percent)   1.00%      
Debt instrument, interest rate (in percent)   7.75% 7.75%    
Repayments of debt $ 2,000