Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)
Mar. 31, 2021
Mar. 26, 2021
Mar. 19, 2021
Dec. 31, 2020
May 22, 2020
Mar. 15, 2019
Nov. 30, 2017
Debt Instrument [Line Items]              
Total long-term debt, net $ 1,063,754,000     $ 1,068,624,000      
Senior Notes              
Debt Instrument [Line Items]              
Unamortized debt issuance costs on Senior Notes (18,561,000)     (12,790,000)      
Unamortized debt discount (20,557,000)     (21,458,000)      
Total long-term debt, net $ 903,754,000     $ 738,624,000      
Senior Notes | Senior Secured Note Due 2025 [Member]              
Debt Instrument [Line Items]              
Interest rate, stated percentage 8.00%     8.00% 8.00%    
Debt Instrument, Face Amount $ 127,073,000     $ 127,073,000 $ 127,100,000    
Unamortized debt discount         $ (21,000,000.0)    
Senior Notes | Senior Notes Due 2026              
Debt Instrument [Line Items]              
Interest rate, stated percentage 5.375%     5.375%     5.375%
Debt Instrument, Face Amount $ 289,448,000     $ 289,448,000     $ 400,000,000.0
Senior Notes | Senior Notes Due 2027              
Debt Instrument [Line Items]              
Interest rate, stated percentage 6.875%     6.875%   6.875%  
Debt Instrument, Face Amount $ 356,351,000     $ 356,351,000   $ 500,000,000.0  
Unamortized debt discount           $ (3,800,000)  
Convertible Notes Payable | Convertible Senior Notes Due 2028              
Debt Instrument [Line Items]              
Interest rate, stated percentage 3.25%   3.25% 3.25%      
Debt Instrument, Face Amount $ 170,000,000 $ 20,000,000.0 $ 150,000,000.0 $ 0      
Revolving Credit Facility | Line of Credit              
Debt Instrument [Line Items]              
Long-term Debt, Gross 160,000,000     330,000,000      
Debt Instrument, Face Amount $ 160,000,000     $ 330,000,000