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CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables) | 3 Months Ended
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Mar. 31, 2024
Cash and Cash Equivalents [Abstract] |
Debt Securities, Available-for-sale | The cash equivalents and marketable securities consist of the following:
| As of March 31, 2024 |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cash Equivalents |  | Marketable Securities |  |
| (In thousands) |  |
Money market funds | $ | 113,904 |  |  | $ | — |  |  | $ | — |  |  | $ | 113,904 |  |  | $ | 113,904 |  |  | $ | — |  |  |
Certificates of deposit | 45,432 |  |  | 46 |  |  | — |  |  | 45,478 |  |  | — |  |  | 45,478 |  |  |
Commercial paper | 73,606 |  |  | 16 |  |  | (49) |  |  | 73,573 |  |  | — |  |  | 73,573 |  |  |
Corporate notes and bonds | 424,500 |  |  | 372 |  |  | (701) |  |  | 424,171 |  |  | — |  |  | 424,171 |  |  |
U.S. Treasuries | 170,120 |  |  | 16 |  |  | (185) |  |  | 169,951 |  |  | — |  |  | 169,951 |  |  |
U.S. Government agency securities | 665,055 |  |  | 95 |  |  | (2,382) |  |  | 662,768 |  |  | — |  |  | 662,768 |  |  |
Total | $ | 1,492,617 |  |  | $ | 545 |  |  | $ | (3,317) |  |  | $ | 1,489,845 |  |  | $ | 113,904 |  |  | $ | 1,375,941 |  |  |
| As of December 31, 2023
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cash Equivalents |  | Marketable Securities
| (In thousands)
Money market funds | $ | 132,037 |  |  | $ | — |  |  | $ | — |  |  | $ | 132,037 |  |  | $ | 132,037 |  |  | $ | — |
Certificates of deposit | 55,863 |  |  | 58 |  |  | (9) |  |  | 55,912 |  |  | 750 |  |  | 55,162 |
Commercial paper | 71,427 |  |  | 29 |  |  | (19) |  |  | 71,437 |  |  | 1,694 |  |  | 69,743 |
Corporate notes and bonds | 406,093 |  |  | 934 |  |  | (931) |  |  | 406,096 |  |  | 462 |  |  | 405,634 |
U.S. Treasuries | 327,773 |  |  | 152 |  |  | (34) |  |  | 327,891 |  |  | — |  |  | 327,891 |
U.S. Government agency securities | 548,391 |  |  | 690 |  |  | (1,225) |  |  | 547,856 |  |  | — |  |  | 547,856 |
Total | $ | 1,541,584 |  |  | $ | 1,863 |  |  | $ | (2,218) |  |  | $ | 1,541,229 |  |  | $ | 134,943 |  |  | $ | 1,406,286 |
Investments Classified by Contractual Maturity Date | The following table summarizes the contractual maturities of the Company’s cash equivalents and marketable securities as of March 31, 2024:
| Amortized Cost |  | Fair Value
| (In thousands)
Due within one year | $ | 1,081,773 |  |  | $ | 1,080,140 |
Due within one to three years | 410,844 |  |  | 409,705 |
Total | $ | 1,492,617 |  |  | $ | 1,489,845 |

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