Fair Value Measurements - CarbonFree (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Balance at beginning of period	$ 14,286
Change in fair value of embedded option	9,112	$ 4,465	$ 17,468
Unrealized income (loss) on investment in CarbonFree convertible note	727	(72)	0
Balance at end of period	17,354	14,286
CarbonFree
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Balance at beginning of period	6,139	5,000	0
Purchase of CarbonFree convertible note	0	0	5,000
Change in fair value of embedded option	(16)	1,211	0
Unrealized income (loss) on investment in CarbonFree convertible note	727	(72)	0
Balance at end of period	$ 6,850	$ 6,139	$ 5,000