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FAIR VALUE (Details) - USD ($) $ in Thousands | Feb. 28, 2022 | Feb. 28, 2021
--- | --- | ---
Short-term investments |  |
Variable-rate financial instruments | $ 150,000 | $ 457,723
Available-for-sale investments | 340,183 | 308,970
Fair Value, Measurements, Recurring |  |
Short-term investments |  |
Variable-rate financial instruments | 150,000 | 457,723
Available-for-sale investments | 340,183 | 308,970
Long-term investments |  |
Equity securities with readily determinable fair values | 16,723 | 23,467
Fair value option investment | 17,735 | 7,661
Available-for-sale investments | 134,033 | 361,788
Total | 658,674 | 1,159,609
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 |  |
Long-term investments |  |
Equity securities with readily determinable fair values | 14,606 | 23,467
Total | 14,606 | 23,467
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 |  |
Short-term investments |  |
Variable-rate financial instruments | 150,000 | 457,723
Available-for-sale investments | 340,183 | 308,970
Long-term investments |  |
Equity securities with readily determinable fair values | 2,117 |
Fair value option investment | 17,419 |
Total | 509,719 | 766,693
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 |  |
Long-term investments |  |
Fair value option investment | 316 | 7,661
Available-for-sale investments | 134,033 | 361,788
Total | $ 134,349 | $ 369,449

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