Equity and Long-term Investments and Fair Value Measurements - Available-for-Sale Securities (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Available-for-Sale Securities
Amortized Cost		$ 75,426	$ 263,469
Gross Unrealized Gains		0	0
Gross Unrealized Losses		0	0
Estimated Fair Value		75,426	263,469
Credit loss		0
Money market funds
Available-for-Sale Securities
Amortized Cost	[1]	75,426	263,469
Gross Unrealized Gains	[1]	0	0
Gross Unrealized Losses	[1]	0	0
Estimated Fair Value	[1]	$ 75,426	$ 263,469

[1] (1) Money market funds are included in cash and cash equivalents in the condensed consolidated balance sheets.