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MARKETABLE SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Jun. 30, 2022
--- | --- | ---
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | $ 688,793 |
Less than 12 Months, Gross Unrealized Losses | (7,017) |
12 Months or Greater, Fair Value | 398,397 |
12 Months or Greater, Gross Unrealized Losses | (9,333) |
Fair Value | 1,087,190 | $ 917,488
Gross Unrealized Losses | (16,350) | (19,778)
Corporate debt securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 310,613 |
Less than 12 Months, Gross Unrealized Losses | (2,242) |
12 Months or Greater, Fair Value | 161,263 |
12 Months or Greater, Gross Unrealized Losses | (3,671) |
Fair Value | 471,876 | 458,699
Gross Unrealized Losses | (5,913) | (8,915)
Municipal securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 9,011 |
Less than 12 Months, Gross Unrealized Losses | (199) |
12 Months or Greater, Fair Value | 17,253 |
12 Months or Greater, Gross Unrealized Losses | (538) |
Fair Value | 26,264 | 58,722
Gross Unrealized Losses | (737) | (1,249)
Sovereign securities |  |
Investments in an Unrealized Loss Position |  |
Fair Value |  | 2,963
Gross Unrealized Losses |  | (53)
U.S. Government agency securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 80,793 |
Less than 12 Months, Gross Unrealized Losses | (459) |
12 Months or Greater, Fair Value | 36,406 |
12 Months or Greater, Gross Unrealized Losses | (459) |
Fair Value | 117,199 | 60,285
Gross Unrealized Losses | (918) | (1,183)
U.S. Treasury securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 288,376 |
Less than 12 Months, Gross Unrealized Losses | (4,117) |
12 Months or Greater, Fair Value | 183,475 |
12 Months or Greater, Gross Unrealized Losses | (4,665) |
Fair Value | 471,851 | 336,819
Gross Unrealized Losses | $ (8,782) | $ (8,378)

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