Fair Value Measurements - Summary of Valuation of the Company's Investments by Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments		$ 137,889
Treasury Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments	$ 40,000	137,669
Other
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments		220
Level II
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments		137,889
Level II | Treasury Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments	$ 40,000	137,669
Level II | Other
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments		$ 220