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FINANCIAL INSTRUMENTS - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 353,834	$ 325,089
Investments:	521,058	447,229
Short-term restricted cash	300	300
Long-term restricted cash	2,922	2,922
Total assets measured at fair value	878,114	775,540
Liabilities
Contingent consideration	184,350	172,094
Total liabilities measured at fair value	184,350	172,094
Commercial paper
Assets
Investments:	109,873	127,302
Corporate debt securities
Assets
Investments:	87,381	49,491
U.S. government & agency securities
Assets
Investments:	323,804	270,436
Level 1
Assets
Cash and cash equivalents	103,753	137,636
Investments:	0	0
Short-term restricted cash	300	300
Long-term restricted cash	2,922	2,922
Total assets measured at fair value	106,975	140,858
Liabilities
Contingent consideration	0	0
Total liabilities measured at fair value	0	0
Level 1 | Commercial paper
Assets
Investments:	0	0
Level 1 | Corporate debt securities
Assets
Investments:	0	0
Level 1 | U.S. government & agency securities
Assets
Investments:	0	0
Level 2
Assets
Cash and cash equivalents	250,081	187,453
Investments:	521,058	447,229
Short-term restricted cash	0	0
Long-term restricted cash	0	0
Total assets measured at fair value	771,139	634,682
Liabilities
Contingent consideration	0	0
Total liabilities measured at fair value	0	0
Level 2 | Commercial paper
Assets
Investments:	109,873	127,302
Level 2 | Corporate debt securities
Assets
Investments:	87,381	49,491
Level 2 | U.S. government & agency securities
Assets
Investments:	323,804	270,436
Level 3
Assets
Cash and cash equivalents	0	0
Investments:	0	0
Short-term restricted cash	0	0
Long-term restricted cash	0	0
Total assets measured at fair value	0	0
Liabilities
Contingent consideration	184,350	172,094
Total liabilities measured at fair value	184,350	172,094
Level 3 | Commercial paper
Assets
Investments:	0	0
Level 3 | Corporate debt securities
Assets
Investments:	0	0
Level 3 | U.S. government & agency securities
Assets
Investments:	$ 0	$ 0

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