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v3.21.1

Senior Unsecured Notes (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Senior Notes [Line Items] |  |  |
Unsecured Long-term Debt, Noncurrent | $ 1,661,429 |  | $ 1,660,663
Gain (Loss) on Extinguishment of Debt | $ 0 | $ 12,195 |
6.125% Senior Unsecured Notes due 2022 [Member] |  |  |
Senior Notes [Line Items] |  |  |
Senior Notes, interest rate, stated percentage | 6.125% |  | 6.125%
Senior Notes, Principal amount | $ 212,403 |  | $ 212,403
Senior Notes, unamortized deferred financing costs | 743 |  | 855
Unsecured Long-term Debt, Noncurrent | $ 211,660 |  | $ 211,548
Senior Unsecured Notes, exchanged or repurchased face amount |  | 40,700 |
Senior Unsecured Notes, repurchased settlement amount |  | 28,300 |
Gain (Loss) on Extinguishment of Debt |  | 12,200 |
Discount realized on extinguishment of debt |  | 12,400 |
Write off of Deferred Debt Issuance Cost |  | $ 235 |
5.0% Senior Unsecured Notes due 2024 [Member] |  |  |
Senior Notes [Line Items] |  |  |
Senior Notes, interest rate, stated percentage | 5.00% |  | 5.00%
Senior Notes, Principal amount | $ 277,034 |  | $ 277,034
Senior Notes, unamortized deferred financing costs | 1,448 |  | 1,576
Unsecured Long-term Debt, Noncurrent | $ 275,586 |  | $ 275,458
5.625% Senior Unsecured Notes due 2025 [Member] |  |  |
Senior Notes [Line Items] |  |  |
Senior Notes, interest rate, stated percentage | 5.625% |  | 5.625%
Senior Notes, Principal amount | $ 349,118 |  | $ 349,118
Senior Notes, unamortized deferred financing costs | 2,634 |  | 2,792
Unsecured Long-term Debt, Noncurrent | $ 346,484 |  | $ 346,326
6.75% Senior Unsecured Notes due 2026 [Member] |  |  |
Senior Notes [Line Items] |  |  |
Senior Notes, interest rate, stated percentage | 6.75% |  | 6.75%
Senior Notes, Principal amount | $ 419,235 |  | $ 419,235
Senior Notes, unamortized deferred financing costs | 3,795 |  | 3,970
Unsecured Long-term Debt, Noncurrent | $ 415,440 |  | $ 415,265
6.625% Senior Unsecured Notes due 2027 [Member] |  |  |
Senior Notes [Line Items] |  |  |
Senior Notes, interest rate, stated percentage | 6.625% |  | 6.625%
Senior Notes, Principal amount | $ 416,791 |  | $ 416,791
Senior Notes, unamortized deferred financing costs | 4,532 |  | 4,725
Unsecured Long-term Debt, Noncurrent | 412,259 |  | 412,066
Senior Unsecured Notes [Member] |  |  |
Senior Notes [Line Items] |  |  |
Senior Notes, Principal amount | 1,674,581 |  | 1,674,581
Senior Notes, unamortized deferred financing costs | $ 13,152 |  | $ 13,918

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