Investment (Income), Net - Net (Gain) Loss on Marketable Securities (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Feb. 29, 2024 |
Feb. 28, 2023 |
Feb. 29, 2024 |
Feb. 28, 2023 |
|
| Net (Gain) Loss on Marketable Securities | ||||
| Unrealized (gains) losses on marketable equity securities | $ (12,015) | $ 946 | $ (18,439) | $ 3,704 |
| Realized losses (gains) on marketable equity securities | 1,742 | (525) | 1,874 | (435) |
| Realized losses (gains) on available-for-sale debt securities | 3 | 8 | 69 | (28) |
| Net (gain) loss on marketable securities | $ (10,270) | $ 429 | $ (16,496) | $ 3,241 |