FAIR VALUE MEASUREMENTS - SECURITIES WITH UNREALIZED LOSSES (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	$ 287,946	$ 166,518
Less Than 12 Months - Gross Unrealized Losses	(447)	(211)
12 Months or Longer - Estimated Fair Value	24,348
12 Months or Longer - Gross Unrealized Losses	(64)
Total - Estimated Fair Value	312,294	166,518
Total - Gross Unrealized Losses	(511)	(211)
U.S. Treasury securities (due in less than one year)
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	39,855
Less Than 12 Months - Gross Unrealized Losses	(30)
Total - Estimated Fair Value	39,855
Total - Gross Unrealized Losses	(30)
Government-sponsored enterprise securities (due in less than one year)
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	30,562	69,377
Less Than 12 Months - Gross Unrealized Losses	(19)	(92)
12 Months or Longer - Estimated Fair Value	13,928
12 Months or Longer - Gross Unrealized Losses	(25)
Total - Estimated Fair Value	44,490	69,377
Total - Gross Unrealized Losses	(44)	(92)
Government-sponsored enterprise securities (due in one to two years)
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	4,991
Less Than 12 Months - Gross Unrealized Losses	(9)
Total - Estimated Fair Value	4,991
Total - Gross Unrealized Losses	(9)
Commercial paper (due in less than one year)
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	110,209	58,622
Less Than 12 Months - Gross Unrealized Losses	(192)	(33)
Total - Estimated Fair Value	110,209	58,622
Total - Gross Unrealized Losses	(192)	(33)
Corporate notes (due in less than one year)
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	40,815	34,567
Less Than 12 Months - Gross Unrealized Losses	(76)	(63)
12 Months or Longer - Estimated Fair Value	10,420
12 Months or Longer - Gross Unrealized Losses	(39)
Total - Estimated Fair Value	51,235	34,567
Total - Gross Unrealized Losses	(115)	(63)
Corporate notes (due in one to two years)
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months - Estimated Fair Value	61,514	3,952
Less Than 12 Months - Gross Unrealized Losses	(121)	(23)
Total - Estimated Fair Value	61,514	3,952
Total - Gross Unrealized Losses	$ (121)	$ (23)