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Debt (Tables)
 12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Schedule of Obligations Under Debt Arrangements At December 31, 2020 and 2019, our obligations under debt arrangements consisted of the following:
 
 December 31, 2020December 31, 2019
 Principal
Debt Issuance Costs (1)
Net ValuePrincipal
Unamortized Discount and Debt Issuance Costs (1)
Net Value
Senior secured credit facility$643,700 $— $643,700 $959,300 $— $959,300 
6.750% senior unsecured notes due 2022
— — — 750,000 9,349 740,651 
6.000% senior unsecured notes due 2023
80,859 504 80,355 400,000 3,557 396,443 
5.625% senior unsecured notes due 2024
341,135 2,963 338,172 350,000 3,923 346,077 
6.500% senior unsecured notes due 2025
534,834 5,639 529,195 550,000 7,020 542,980 
6.250% senior unsecured notes due 2026
359,799 4,189 355,610 450,000 6,214 443,786 
8.000% senior unsecured notes due 2027
750,000 13,022 736,978 — — — 
7.750% senior unsecured notes due 2028
720,975 11,269 709,706 — — — 
Total long-term debt$3,431,302 $37,586 $3,393,716 $3,459,300 $30,063 $3,429,237 
(1)    Unamortized debt issuance costs associated with our senior secured credit facility (included in Other Long Term Assets on the Consolidated Balance Sheets) were $5.8 million and $7.6 million as of December 31, 2020 and December 31, 2019, respectively.
Schedule of Summary of Applicable Redemption Periods A summary of the applicable redemption periods is provided in the table below.    
2023 Notes(1)
2024 Notes2025 Notes2026 Notes2027 Notes2028 Notes
Redemption right beginning onMay 15, 2018June 15, 2019October 1, 2020February 15, 2021January 15, 2024February 1, 2023
Redemption of up to 35% of the principal amount of notes with the proceeds of an equity offering permitted prior to

May 15, 2018June 15, 2019October 1, 2020February 15, 2021January 15, 2024February 1, 2023
(1) Refer to Note 23 for discussion surrounding our redemption of our 2023 Notes during the first quarter of 2021.