SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Marketable Securities, Available For Sale
Cash and cash equivalents	$ 33,211	$ 61,148
Fair Value, Recurring
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	499,602	529,249
Unrealized Gains, Marketable securities, available for sale	125	682
Unrealized Losses, Marketable securities, available for sale	(377)	(5)
Fair Market Value, Marketable securities, available for sale	499,350	529,926
Fair Value, Recurring \| Level 1 \| Money market funds
Marketable Securities, Available For Sale
Cash and cash equivalents	32,999	60,965
Cash equivalents, Fair Market Value	32,999	60,965
Fair Value, Recurring \| Level 2 \| Asset-backed securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	56,984	55,426
Unrealized Gains, Marketable securities, available for sale	17	78
Unrealized Losses, Marketable securities, available for sale	(24)
Fair Market Value, Marketable securities, available for sale	56,977	55,504
Fair Value, Recurring \| Level 2 \| Corporate debt securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	181,820	193,479
Unrealized Gains, Marketable securities, available for sale	44	270
Unrealized Losses, Marketable securities, available for sale	(221)	(5)
Fair Market Value, Marketable securities, available for sale	181,643	193,744
Fair Value, Recurring \| Level 2 \| Commercial paper
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	20,209	10,424
Unrealized Gains, Marketable securities, available for sale	2	7
Unrealized Losses, Marketable securities, available for sale	(36)
Fair Market Value, Marketable securities, available for sale	20,175	10,431
Fair Value, Recurring \| Level 2 \| U.S. government treasury and agency securities
Marketable Securities, Available For Sale
Amortized Cost Basis, Marketable securities, available for sale	207,590	208,955
Unrealized Gains, Marketable securities, available for sale	62	327
Unrealized Losses, Marketable securities, available for sale	(96)
Fair Market Value, Marketable securities, available for sale	$ 207,556	$ 209,282

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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