Investment (Income), Net - Net Loss (Gain) on Marketable Securities (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Nov. 30, 2023 |
Nov. 30, 2022 |
Nov. 30, 2023 |
Nov. 30, 2022 |
|
| Net Loss (Gain) on Marketable Securities | ||||
| Unrealized losses (gains) on marketable equity securities | $ 103 | $ (3,754) | $ (6,424) | $ 2,759 |
| Realized losses (gains) on marketable equity securities | 87 | (40) | 132 | 89 |
| Realized losses (gains) on available-for-sale debt securities | 35 | 66 | (36) | |
| Net loss (gain) on marketable securities | $ 225 | $ (3,794) | $ (6,226) | $ 2,812 |