Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	$ 497,660	$ 485,965
Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	39,561	45,570
Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	456,212	440,395
Level 3
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	1,887
Marketable Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	456,212	440,395
Marketable Securities | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	456,212	440,395
Equity Investments
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	41,448	45,570
Equity Investments | Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	39,561	$ 45,570
Equity Investments | Level 3
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total Assets	$ 1,887