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Recently Issued Accounting Standards (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Mar. 31, 2022
Jan. 01, 2022
Dec. 31, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Aug. 31, 2020
Oct. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity $ 613,088 $ 611,209   $ 693,633 $ 614,190 $ 617,298 $ 619,600    
2024 Notes | Senior Notes                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Long-term debt, net               $ 78,900  
2025 Notes | Senior Notes                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Long-term debt, net                 $ 100,700
Cumulative Effect, Period of Adoption, Adjustment                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity       (66,383)          
Cumulative Effect, Period of Adoption, Adjustment | 2024 Notes | Senior Notes | Accounting Standards Update 2020-06                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Long-term debt, net     $ 25,100            
Cumulative Effect, Period of Adoption, Adjustment | 2025 Notes | Senior Notes | Accounting Standards Update 2020-06                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Long-term debt, net     41,300            
Retained Earnings (Accumulated Deficit)                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity (596,928) (592,340)   (626,779) (608,092) (598,985) (589,178)    
Retained Earnings (Accumulated Deficit) | Cumulative Effect, Period of Adoption, Adjustment                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity       39,789          
Retained Earnings (Accumulated Deficit) | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity     39,800            
Retained Earnings (Accumulated Deficit) | Cumulative Effect, Period of Adoption, Adjustment | 2024 Notes | Senior Notes | Accounting Standards Update 2020-06                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity     (11,700)            
Retained Earnings (Accumulated Deficit) | Cumulative Effect, Period of Adoption, Adjustment | 2025 Notes | Senior Notes | Accounting Standards Update 2020-06                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity     (28,100)            
Additional Paid-In Capital                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity $ 1,231,005 $ 1,224,250   1,340,989 $ 1,242,900 $ 1,236,847 $ 1,229,320    
Additional Paid-In Capital | Cumulative Effect, Period of Adoption, Adjustment                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity       $ (106,172)          
Additional Paid-In Capital | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Stockholders' equity     $ 106,200