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Fair Value Measurements - CarbonFree (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]            
Balance at beginning of period     $ 14,286   $ 14,286  
Change in fair value of embedded option $ 2,041     $ 1,410 8,690 $ 4,858
Other comprehensive income (loss) 146 $ 207 121 (306) 474 (306)
Balance at end of period 16,405       16,405  
(Level 3) | CarbonFree            
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]            
Balance at beginning of period     6,139   6,139  
Balance at end of period 6,563       6,563  
Unrealized Gain (Loss) on Investment            
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]            
Other comprehensive income (loss) $ 146     $ (306)    
CarbonFree            
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]            
Balance at beginning of period           $ 5,000
Change in fair value of embedded option         (50)  
CarbonFree | Unrealized Gain (Loss) on Investment            
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]            
Other comprehensive income (loss)     $ 121   $ 474