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FINANCIAL INSTRUMENTS (Tables)
 6 Months Ended
Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Cash, Cash Equivalents and Available-for-Sale Securities by Significant Investment Category
The following tables show the Company’s cash, cash equivalents and available-for-sale securities by significant investment category for each period presented:
June 30, 2024
Amortized CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Aggregate Fair ValueCash and Cash Equivalents
Short-term
Marketable
Securities (1)
Long-term
Marketable
Securities (2)
Level 1:
Cash$285,666 $— $— $285,666 $285,666 $— $— 
Level 2:
Money market instruments676,505 — — 676,505 676,505 — — 
Corporate debt securities537,626 670 (1,460)536,836 — 162,959 373,877 
U.S. government agency securities184,487 39 (966)183,560 9,979 88,310 85,271 
Asset-backed securities98,958 105 (196)98,867 932 97,935 
Subtotal1,497,576 814 (2,622)1,495,768 686,484 252,201 557,083 
Total$1,783,242 $814 $(2,622)$1,781,434 $972,150 $252,201 $557,083 
December 31, 2023
Amortized CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Aggregate Fair ValueCash and Cash Equivalents
Short-term
Marketable
Securities (1)
Long-term
Marketable
Securities (2)
Level 1:
Cash$229,676 $— $— $229,676 $229,676 $— $— 
Level 2:
Money market instruments499,483 — — 499,483 499,483 — — 
Corporate debt securities587,896 3,476 (1,996)589,376 — 193,251 396,125 
U.S. government agency securities251,952 556 (1,140)251,368 19,976 111,343 120,049 
Commercial paper20,076 5 — 20,081 5,992 14,089 — 
Asset-backed securities94,744 351 (134)94,961 — — 94,961 
Subtotal1,454,151 4,388 (3,270)1,455,269 525,451 318,683 611,135 
Total$1,683,827 $4,388 $(3,270)$1,684,945 $755,127 $318,683 $611,135 
(1)    The Company’s short-term marketable securities mature in one year or less.
(2)    The Company’s long-term marketable securities mature between one and five years.