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Fair Value Measurements - Estimated fair values and the carrying values (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Value $ 404,171 $ 111,344
Senior Notes 2026    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Value 390,523  
Fair Value 331,783  
Senior Notes 2025    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Value 13,648 111,344
Fair Value $ 13,628 $ 108,210