Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows (Parenthetical)

v3.20.4
Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2020
Debt Instrument [Line Items]        
Discount on the issuance of 9.00% Second Lien Senior Secured Notes due 2025 $ 35,270 $ 0 $ 0  
6.375% Senior Notes due 2026        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated (as a percent) 6.375%      
9.00% Second Lien Notes        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated (as a percent) 9.00%     9.00%