FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets:
Marketable securities	$ 270,192	$ 321,648
Total	320,798	377,458
Liabilities:
Sale of future royalties	129,773	129,582
Total	129,773	129,582
U.S. Treasury securities
Assets:
Marketable securities	14,985	22,951
Government-sponsored enterprise securities
Assets:
Marketable securities	2,959
Commercial paper
Assets:
Marketable securities	71,557	84,382
Corporate notes
Assets:
Marketable securities	173,648	209,253
Money market funds
Assets:
Cash, cash equivalents and restricted cash	45,337	50,557
Certificate of deposit
Assets:
Cash, cash equivalents and restricted cash	274	274
Municipal securities
Assets:
Cash, cash equivalents and restricted cash	12,038	10,041
Level 1
Assets:
Total	45,611	50,831
Liabilities:
Sale of future royalties	0	0
Total	0	0
Level 1 \| U.S. Treasury securities
Assets:
Marketable securities	0	0
Level 1 \| Government-sponsored enterprise securities
Assets:
Marketable securities	0
Level 1 \| Commercial paper
Assets:
Marketable securities	0	0
Level 1 \| Corporate notes
Assets:
Marketable securities	0	0
Level 1 \| Money market funds
Assets:
Cash, cash equivalents and restricted cash	45,337	50,557
Level 1 \| Certificate of deposit
Assets:
Cash, cash equivalents and restricted cash	274	274
Level 1 \| Municipal securities
Assets:
Cash, cash equivalents and restricted cash	0	0
Level 2
Assets:
Total	275,187	326,627
Liabilities:
Sale of future royalties	0	0
Total	0	0
Level 2 \| U.S. Treasury securities
Assets:
Marketable securities	14,985	22,951
Level 2 \| Government-sponsored enterprise securities
Assets:
Marketable securities	2,959
Level 2 \| Commercial paper
Assets:
Marketable securities	71,557	84,382
Level 2 \| Corporate notes
Assets:
Marketable securities	173,648	209,253
Level 2 \| Money market funds
Assets:
Cash, cash equivalents and restricted cash	0	0
Level 2 \| Certificate of deposit
Assets:
Cash, cash equivalents and restricted cash	0	0
Level 2 \| Municipal securities
Assets:
Cash, cash equivalents and restricted cash	12,038	10,041
Level 3
Assets:
Total	0	0
Liabilities:
Sale of future royalties	129,773	129,582
Total	129,773	129,582
Level 3 \| U.S. Treasury securities
Assets:
Marketable securities	0	0
Level 3 \| Government-sponsored enterprise securities
Assets:
Marketable securities	0
Level 3 \| Commercial paper
Assets:
Marketable securities	0	0
Level 3 \| Corporate notes
Assets:
Marketable securities	0	0
Level 3 \| Money market funds
Assets:
Cash, cash equivalents and restricted cash	0	0
Level 3 \| Certificate of deposit
Assets:
Cash, cash equivalents and restricted cash	0	0
Level 3 \| Municipal securities
Assets:
Cash, cash equivalents and restricted cash	$ 0	$ 0

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Amount excluding accrued interest, 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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