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MARKETABLE SECURITIES - Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Interest receivable | $ 2,700 | $ 2,300
Amortized Cost | 240,734 | 247,384
Gross Unrealized Gains | 120 | 967
Gross Unrealized Losses | (869) | (711)
Estimated Fair Market Value | 239,985 | 247,640
Investments due in 3 months or less: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 3,998 | 10,688
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (23) | (42)
Estimated Fair Market Value | 3,975 | 10,646
Investments due in 4-12 months: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 90,812 | 49,398
Gross Unrealized Gains | 8 | 15
Gross Unrealized Losses | (343) | (347)
Estimated Fair Market Value | 90,477 | 49,066
Investments due in 12 months or greater: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 145,924 | 187,298
Gross Unrealized Gains | 112 | 952
Gross Unrealized Losses | (503) | (322)
Estimated Fair Market Value | 145,533 | 187,928
Commercial paper | Investments due in 4-12 months: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 738 | 718
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Market Value | 738 | 718
Corporate securities | Investments due in 3 months or less: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 3,998 | 10,688
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (23) | (42)
Estimated Fair Market Value | 3,975 | 10,646
Corporate securities | Investments due in 4-12 months: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 90,074 | 48,680
Gross Unrealized Gains | 8 | 15
Gross Unrealized Losses | (343) | (347)
Estimated Fair Market Value | 89,739 | 48,348
Corporate securities | Investments due in 12 months or greater: |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 145,924 | 187,298
Gross Unrealized Gains | 112 | 952
Gross Unrealized Losses | (503) | (322)
Estimated Fair Market Value | $ 145,533 | $ 187,928

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