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Senior Secured Notes (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 12, 2016 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2022 | Jun. 17, 2020
10.0% Senior Secured Notes due 2025 |  |  |  |  |
Senior Notes [Line Items] |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 10.00% |  | 10.00% | 10.00%
Senior Notes, Principal amount |  | $ 446,675 |  | $ 0 | $ 446,700
Senior Secured Notes, unamortized debt discount |  | 30,236 |  |  |
Senior Notes, unamortized deferred financing costs |  | 8,727 |  |  |
Secured Long-term Debt, Noncurrent |  | $ 407,712 |  | $ 0 |
Senior Notes Debt Issuance Costs |  |  |  |  | 13,100
Senior Notes, Initial Fair Value |  |  |  |  | $ 405,000
1.50% Senior Unsecured Convertible Notes Due 2021 |  |  |  |  |
Senior Notes [Line Items] |  |  |  |  |
Senior Notes, interest rate, stated percentage | 1.50% |  |  |  |
Senior Notes, Principal amount | $ 172,500 |  |  |  |
Senior Notes Debt Issuance Costs | 5,900 |  |  |  |
Net proceeds from Convertible Notes Issuance | 166,600 |  |  |  |
Senior Unsecured Convertible Notes, Initial fair value of liability component | 132,300 |  |  |  |
Senior Unsecured Convertible Notes, Initial value of equity component | $ 40,200 |  |  |  |
1.50% Senior Secured Convertible Notes Due 2021 |  |  |  |  |
Senior Notes [Line Items] |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 1.50% |  | 1.50% |
Senior Convertible Notes, interest expense |  | $ 2,300 | $ 7,700 |  |

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