Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	$ 443,558	$ 497,660
Marketable Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	408,275	456,212
Equity Investments
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	35,283	41,448
Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	33,524	39,561
Level 1 | Equity Investments
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	33,524	39,561
Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	408,275	456,212
Level 2 | Marketable Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	408,275	456,212
Level 3
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	1,759	1,887
Level 3 | Equity Investments
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	$ 1,759	$ 1,887