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Supplemental Balance Sheet Information - Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis    
Asset retirement obligations as of December 31, 2021 $ 9,072  
Additions to asset retirement obligations 0  
Accretion expense 190  
Liabilities settled (3,902)  
Ending asset retirement obligations 5,360  
Current portion of asset retirement obligations (412) $ (261)
Long-term portion of asset retirement obligations $ 4,948