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CASH, CASH EQUIVALENTS AND INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract] |
Debt Securities, Available-for-Sale | The following table presents the Company’s cash, cash equivalents and short-term investments:
| December 31, 2022 |  | December 31, 2021
(in thousands) | Amortized Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value |  | Amortized Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
Cash: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand deposits | $ | 7,373 |  |  | $ | — |  |  | $ | — |  |  | $ | 7,373 |  |  | $ | 26,536 |  |  | $ | — |  |  | $ | — |  |  | $ | 26,536 |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | 64,855 |  |  | — |  |  | — |  |  | 64,855 |  |  | 1,152,761 |  |  | — |  |  | — |  |  | 1,152,761 |
U.S. agency securities | 63,605 |  |  | 1 |  |  | (2) |  |  | 63,604 |  |  | — |  |  | — |  |  | — |  |  | — |
U.S. Treasury securities | 795 |  |  | — |  |  | — |  |  | 795 |  |  | — |  |  | — |  |  | — |  |  | — |
Total cash equivalents | 129,255 |  |  | 1 |  |  | (2) |  |  | 129,254 |  |  | 1,152,761 |  |  | — |  |  | — |  |  | 1,152,761 |
Total cash and equivalents | 136,628 |  |  | 1 |  |  | (2) |  |  | 136,627 |  |  | 1,179,297 |  |  | — |  |  | — |  |  | 1,179,297 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency securities | 979,878 |  |  | 361 |  |  | (17) |  |  | 980,222 |  |  | — |  |  | — |  |  | — |  |  | — |
U.S. Treasury securities | 65,586 |  |  | 1 |  |  | (91) |  |  | 65,496 |  |  | — |  |  | — |  |  | — |  |  | — |
Total short-term investments | 1,045,464 |  |  | 362 |  |  | (108) |  |  | 1,045,718 |  |  | — |  |  | — |  |  | — |  |  | — |
Total cash, cash equivalents and short-term investments | $ | 1,182,092 |  |  | $ | 363 |  |  | $ | (110) |  |  | $ | 1,182,345 |  |  | $ | 1,179,297 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,179,297 |
Schedule of Cash and Cash Equivalents | The following table presents the Company’s cash, cash equivalents and short-term investments:
| December 31, 2022 |  | December 31, 2021
(in thousands) | Amortized Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value |  | Amortized Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
Cash: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand deposits | $ | 7,373 |  |  | $ | — |  |  | $ | — |  |  | $ | 7,373 |  |  | $ | 26,536 |  |  | $ | — |  |  | $ | — |  |  | $ | 26,536 |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | 64,855 |  |  | — |  |  | — |  |  | 64,855 |  |  | 1,152,761 |  |  | — |  |  | — |  |  | 1,152,761 |
U.S. agency securities | 63,605 |  |  | 1 |  |  | (2) |  |  | 63,604 |  |  | — |  |  | — |  |  | — |  |  | — |
U.S. Treasury securities | 795 |  |  | — |  |  | — |  |  | 795 |  |  | — |  |  | — |  |  | — |  |  | — |
Total cash equivalents | 129,255 |  |  | 1 |  |  | (2) |  |  | 129,254 |  |  | 1,152,761 |  |  | — |  |  | — |  |  | 1,152,761 |
Total cash and equivalents | 136,628 |  |  | 1 |  |  | (2) |  |  | 136,627 |  |  | 1,179,297 |  |  | — |  |  | — |  |  | 1,179,297 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency securities | 979,878 |  |  | 361 |  |  | (17) |  |  | 980,222 |  |  | — |  |  | — |  |  | — |  |  | — |
U.S. Treasury securities | 65,586 |  |  | 1 |  |  | (91) |  |  | 65,496 |  |  | — |  |  | — |  |  | — |  |  | — |
Total short-term investments | 1,045,464 |  |  | 362 |  |  | (108) |  |  | 1,045,718 |  |  | — |  |  | — |  |  | — |  |  | — |
Total cash, cash equivalents and short-term investments | $ | 1,182,092 |  |  | $ | 363 |  |  | $ | (110) |  |  | $ | 1,182,345 |  |  | $ | 1,179,297 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,179,297 |
Schedule of Investments Classified by Contractual Maturity Date | As of December 31, 2022, the fair values of available-for-sale investments, by remaining contractual maturity, were as follows:
(in thousands) |
Due within one year | $ | 1,052,364 |
Due after one year through two years | 57,753 |
Total | $ | 1,110,117 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 + Details
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