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Long-Term Debt (Details) - USD ($) $ in Thousands |  |  |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 29, 2021 | Jul. 01, 2021 | Jun. 23, 2021 | Jun. 17, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jul. 21, 2021 | Dec. 31, 2020
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility |  |  |  |  | $ 52,500 |  |  | $ 52,500 |  |  | $ 93,000
Secured Long-term Debt, Noncurrent |  |  |  |  | 467,807 |  |  | 467,807 |  |  | 460,656
Unsecured Long-term Debt, Noncurrent |  |  |  |  | 1,671,818 |  |  | 1,671,818 |  |  | 1,660,663
Total long-term debt, net |  |  |  |  | 2,192,125 |  |  | 2,192,125 |  |  | 2,214,319
Gain (loss) on extinguishment of debt |  |  |  |  | (2,144) | $ 227,281 |  | $ (2,144) | $ 239,476 |  |
Debt Instrument, Covenant Compliance |  |  |  |  |  |  |  | The Company was in compliance with all covenants under the Credit Agreement and the indentures governing the Senior Notes as of June 30, 2021, and through the filing of this report. |  |  |
Capitalized interest costs |  |  |  |  | 4,700 | 4,100 |  | $ 9,000 | $ 6,800 |  |
6.5% Senior Unsecured Notes Due 2028 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unsecured Long-term Debt, Noncurrent |  |  |  |  | 392,837 |  |  | 392,837 |  |  | 0
Senior Unsecured Notes, Principal amount |  |  | $ 400,000 |  | $ 400,000 |  |  | $ 400,000 |  |  | 0
Debt Instrument, Maturity Date |  |  | Jul. 15, 2028 |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  |  | 6.50% |  | 6.50% |  |  | 6.50% |  |  |
Proceeds from Debt, Net of Issuance Costs |  |  | $ 392,800 |  |  |  |  |  |  |  |
Senior Secured Notes, Debt Issuance Costs, Gross |  |  | 7,200 |  |  |  |  |  |  |  |
6.125% Senior Unsecured Notes due 2022 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unsecured Long-term Debt, Noncurrent |  |  |  |  | $ 0 |  |  | $ 0 |  |  | 211,548
Senior Unsecured Notes, Principal amount |  |  |  |  | $ 0 |  |  | $ 0 |  |  | $ 212,403
Senior Notes, interest rate, stated percentage |  |  |  |  | 6.125% |  |  | 6.125% |  |  | 6.125%
Senior Unsecured Notes, exchanged or repurchased face amount |  |  | 193,100 |  | $ 19,300 |  | $ 40,700 | $ 19,300 |  |  |
Senior Unsecured Notes, repurchased settlement amount |  |  |  |  |  |  | 28,300 |  |  |  |
Gain (loss) on extinguishment of debt |  |  |  |  |  |  | 12,200 |  |  |  |
Discount realized on extinguishment of debt |  |  |  |  |  |  | (12,400) |  |  |  |
6.125% Senior Unsecured Notes due 2022 [Member] | Accelerated unamortized deferred financing costs [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  | $ 235 |  |  |  |
5.0% Senior Unsecured Notes due 2024 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unsecured Long-term Debt, Noncurrent |  |  |  |  | 104,270 |  |  | 104,270 |  |  | $ 275,458
Senior Unsecured Notes, Principal amount |  |  |  |  | $ 104,769 |  |  | $ 104,769 |  |  | $ 277,034
Senior Notes, interest rate, stated percentage |  |  |  |  | 5.00% |  |  | 5.00% |  |  | 5.00%
Senior Unsecured Notes, exchanged or repurchased face amount |  |  | $ 172,300 |  |  |  |  |  |  |  |
6.125% Senior Unsecured Notes Due 2022 and 5.0% Senior Unsecured Notes Due 2024 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes, repurchased settlement amount |  |  |  |  | $ 385,300 |  |  | $ 385,300 |  |  |
Gain (loss) on extinguishment of debt |  |  |  |  | (2,100) |  |  |  |  |  |
Debt Instrument, Repurchase Premium |  |  |  |  | 600 |  |  |  |  |  |
6.125% Senior Unsecured Notes Due 2022 and 5.0% Senior Unsecured Notes Due 2024 [Member] | Accelerated unamortized deferred financing costs [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  | 1,500 |  |  |  |  |  |
1.50% Senior Secured Convertible Notes Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Secured Long-term Debt, Noncurrent |  |  |  |  | 65,485 |  |  | 65,485 |  |  | $ 63,482
Senior Unsecured Notes, Principal amount |  |  |  |  | $ 65,485 |  |  | $ 65,485 |  |  | $ 65,485
Senior Notes, interest rate, stated percentage |  |  |  |  | 1.50% |  |  | 1.50% |  |  | 1.50%
10.0% Senior Secured Notes due 2025 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Secured Long-term Debt, Noncurrent |  |  |  |  | $ 402,322 |  |  | $ 402,322 |  |  | $ 397,174
Senior Unsecured Notes, Principal amount |  |  |  | $ 446,700 | $ 446,675 |  |  | $ 446,675 |  |  | $ 446,675
Senior Notes, interest rate, stated percentage |  |  |  |  | 10.00% |  |  | 10.00% |  |  | 10.00%
Senior Unsecured Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Senior Unsecured Notes, Principal amount |  |  |  |  | $ 1,689,913 |  |  | $ 1,689,913 |  |  | $ 1,674,581
Senior Unsecured Notes, exchanged or repurchased face amount |  |  |  | $ 611,900 |  |  |  |  |  |  |
Senior Unsecured Notes [Member] | Accelerated unamortized deferred financing costs [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  | 5,600 |  |  |  |  |
1.50% Senior Unsecured Convertible Notes Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  |  |  | 1.50% |  |  |  |  |  |  |
Senior Unsecured Notes, exchanged or repurchased face amount |  |  |  | $ 107,000 |  |  |  |  |  |  |
Repayment of 1.50% Senior Convertible Notes due 2021 |  |  |  | $ 53,500 |  |  |  |  |  |  |
Senior Secured Notes, Senior Unsecured Notes, and 1.50% Senior Unsecured Convertible Notes Due 2021 |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on extinguishment of debt |  |  |  |  |  | 227,300 |  |  |  |  |
Senior Unsecured Notes and 1.50% Senior Unsecured Convertible Notes Due 2021 | Accelerated Unamortized Debt Discount |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  | $ 6,100 |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant Compliance | The Company was in compliance with all covenants under the Credit Agreement and the indentures governing the Senior Notes as of June 30, 2021, and through the filing of this report. |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 1.50% Senior Secured Convertible Notes Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayment of 1.50% Senior Convertible Notes due 2021 |  | $ 65,500 |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility |  |  |  |  | $ 52,500 |  |  | $ 52,500 |  |  | $ 93,000
Revolving Credit Facility [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility |  |  |  |  |  |  |  |  |  | $ 99,000 |

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- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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