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INVESTMENTS IN DEBT SECURITIES - Short-Term and Long-Term Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 873,622 |
Fair Value | 875,403 |
Short-term debt securities: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 402,814 | $ 859,198
Gross Unrealized Gains | 713 | 306
Gross Unrealized Losses | (101) | (7,603)
Fair Value | 403,426 | 851,901
Short-term debt securities: | U.S. agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 34,454 | 68,778
Gross Unrealized Gains | 15 | 0
Gross Unrealized Losses | (1) | (1,263)
Fair Value | 34,468 | 67,515
Short-term debt securities: | Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 160,238 | 216,864
Gross Unrealized Gains | 248 | 96
Gross Unrealized Losses | (96) | (1,733)
Fair Value | 160,390 | 215,227
Short-term debt securities: | Commercial paper |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 333 | 15,159
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | 333 | 15,159
Short-term debt securities: | Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 398 | 9,396
Gross Unrealized Gains | 1 | 0
Gross Unrealized Losses | 0 | (231)
Fair Value | 399 | 9,165
Short-term debt securities: | Certificates of deposit |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 1,051 | 3,856
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | 1,051 | 3,856
Short-term debt securities: | U.S. government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 206,340 | 544,145
Gross Unrealized Gains | 449 | 210
Gross Unrealized Losses | (4) | (4,357)
Fair Value | 206,785 | 539,998
Short-term debt securities: | Foreign government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost |  | 1,000
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | (19)
Fair Value |  | 981
Long-term debt securities: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 470,808 | 249,608
Gross Unrealized Gains | 1,938 | 1,739
Gross Unrealized Losses | (769) | (220)
Fair Value | 471,977 | 251,127
Long-term debt securities: | U.S. agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 49,017 |
Gross Unrealized Gains | 23 |
Gross Unrealized Losses | (10) |
Fair Value | 49,030 |
Long-term debt securities: | Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 195,035 | 94,564
Gross Unrealized Gains | 693 | 809
Gross Unrealized Losses | (384) | (45)
Fair Value | 195,344 | 95,328
Long-term debt securities: | Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 4,592 | 2,495
Gross Unrealized Gains | 4 | 55
Gross Unrealized Losses | (251) | (138)
Fair Value | 4,345 | 2,412
Long-term debt securities: | U.S. government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 222,164 | 152,549
Gross Unrealized Gains | 1,218 | 875
Gross Unrealized Losses | (124) | (37)
Fair Value | $ 223,258 | $ 153,387

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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