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CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2023
Cash and Cash Equivalents [Abstract]  
Debt Securities, Available-for-sale
The cash equivalents and marketable securities consist of the following:
As of December 31, 2023
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable Securities
(In thousands)
Money market funds$132,037 $— $— $132,037 $132,037 $— 
Certificates of deposit55,863 58 (9)55,912 750 55,162 
Commercial paper71,427 29 (19)71,437 1,694 69,743 
Corporate notes and bonds406,093 934 (931)406,096 462 405,634 
U.S. Treasuries327,773 152 (34)327,891 — 327,891 
U.S. Government agency securities548,391 690 (1,225)547,856 — 547,856 
Total$1,541,584 $1,863 $(2,218)$1,541,229 $134,943 $1,406,286 
As of December 31, 2022
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash EquivalentsMarketable Securities
(In thousands)
Money market funds$165,407 $— $— $165,407 $165,407 $— 
Certificates of deposit31,874 13 (130)31,757 — 31,757 
Commercial paper148,832 10 (171)148,671 50,764 97,907 
Corporate notes and bonds168,887 2 (3,313)165,576 — 165,576 
U.S. Treasuries301,349 8 (132)301,225 4,094 297,131 
U.S. Government agency securities554,035 — (6,807)547,228 — 547,228 
Total$1,370,384 $33 $(10,553)$1,359,864 $220,265 $1,139,599 
Investments Classified by Contractual Maturity Date
The following table summarizes the contractual maturities of the Company’s cash equivalents and marketable securities as of December 31, 2023:
Amortized CostFair Value
(In thousands)
Due within one year$1,205,867 $1,205,102 
Due within one to three years335,717 336,127 
Total$1,541,584 $1,541,229