EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Available-for-Sale Securities (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Available-for-Sale Securities
Amortized Cost		$ 170,706	$ 263,469
Gross Unrealized Gains		0	0
Gross Unrealized Losses		0	0
Estimated Fair Value		170,706	263,469
Credit loss		0	0
Money market funds
Available-for-Sale Securities
Amortized Cost	[1]	170,706	263,469
Gross Unrealized Gains	[1]	0	0
Gross Unrealized Losses	[1]	0	0
Estimated Fair Value	[1]	$ 170,706	$ 263,469

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