NET GAIN ON TRADING SECURITIES - Summary of net gain on trading securities (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Investments, Debt and Equity Securities [Abstract] | ||||
| Realized net gain on sale of equity securities | $ 41,386 | $ 6,571 | $ 189,783 | $ 13,563 |
| Debt Securities, Trading, Unrealized Gain (Loss) | (34,372) | 7,401 | 5,487 | 5,680 |
| Net gain on trading securities | $ 7,014 | $ 13,972 | $ 195,270 | $ 19,243 |
| X | ||||||||||
- Definition Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
|