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MARKETABLE SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
--- | --- | ---
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | $ 897,988 | $ 688,793
Less than 12 Months, Gross Unrealized Losses | (2,200) | (7,017)
12 Months or Greater, Fair Value | 295,809 | 398,397
12 Months or Greater, Gross Unrealized Losses | (3,676) | (9,333)
Fair Value | 1,193,797 | 1,087,190
Gross Unrealized Losses | (5,876) | (16,350)
Corporate debt securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 355,882 | 310,613
Less than 12 Months, Gross Unrealized Losses | (942) | (2,242)
12 Months or Greater, Fair Value | 100,957 | 161,263
12 Months or Greater, Gross Unrealized Losses | (1,076) | (3,671)
Fair Value | 456,839 | 471,876
Gross Unrealized Losses | (2,018) | (5,913)
Municipal securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 17,364 | 9,011
Less than 12 Months, Gross Unrealized Losses | (81) | (199)
12 Months or Greater, Fair Value | 10,788 | 17,253
12 Months or Greater, Gross Unrealized Losses | (116) | (538)
Fair Value | 28,152 | 26,264
Gross Unrealized Losses | (197) | (737)
U.S. Government agency securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 58,598 | 80,793
Less than 12 Months, Gross Unrealized Losses | (137) | (459)
12 Months or Greater, Fair Value | 17,197 | 36,406
12 Months or Greater, Gross Unrealized Losses | (116) | (459)
Fair Value | 75,795 | 117,199
Gross Unrealized Losses | (253) | (918)
U.S. Treasury securities |  |
Investments in an Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 466,144 | 288,376
Less than 12 Months, Gross Unrealized Losses | (1,040) | (4,117)
12 Months or Greater, Fair Value | 166,867 | 183,475
12 Months or Greater, Gross Unrealized Losses | (2,368) | (4,665)
Fair Value | 633,011 | 471,851
Gross Unrealized Losses | $ (3,408) | $ (8,782)

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