FAIR VALUE OF FINANCIAL INSTRUMENTS (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Cash equivalents:
Money market funds	$ 403,979
Marketable securities:
Fair Value	330,331	$ 383,715
Total	734,310	768,887
U.S. treasury securities
Marketable securities:
Fair Value	132,036	127,045
Commercial paper
Marketable securities:
Fair Value	14,310	18,433
Corporate notes and obligations
Marketable securities:
Fair Value	183,985	238,237
Money market funds
Cash equivalents:
Money market funds		384,648
Corporate notes and obligations
Cash equivalents:
Money market funds		524
Level 1
Cash equivalents:
Money market funds	403,979
Marketable securities:
Total	536,015	511,693
Level 1 | U.S. treasury securities
Marketable securities:
Fair Value	132,036	127,045
Level 1 | Commercial paper
Marketable securities:
Fair Value	0	0
Level 1 | Corporate notes and obligations
Marketable securities:
Fair Value	0	0
Level 1 | Money market funds
Cash equivalents:
Money market funds		384,648
Level 1 | Corporate notes and obligations
Cash equivalents:
Money market funds		0
Level 2
Cash equivalents:
Money market funds	0
Marketable securities:
Total	198,295	257,194
Level 2 | U.S. treasury securities
Marketable securities:
Fair Value	0	0
Level 2 | Commercial paper
Marketable securities:
Fair Value	14,310	18,433
Level 2 | Corporate notes and obligations
Marketable securities:
Fair Value	$ 183,985	238,237
Level 2 | Money market funds
Cash equivalents:
Money market funds		0
Level 2 | Corporate notes and obligations
Cash equivalents:
Money market funds		$ 524