INVESTMENTS - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands  | 
Dec. 31, 2023  | 
Mar. 31, 2023  | 
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| Investments, Debt and Equity Securities [Abstract] | |||||
| For the remaining three months ending March 31, 2024 | $ 33,918 | ||||
| 2025 | 100,470 | ||||
| 2026 | 204,919 | ||||
| 2027 | 162,746 | ||||
| 2028 | 38,250 | ||||
| Thereafter | 125,394 | ||||
| Total contractual repayments | 665,697 | ||||
| Investments in equity securities | 202,807 | ||||
| Total cost basis of investments held as of December 31, 2023: | $ 868,504 | $ 720,630 | |||
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- Definition Principal Repayment And Maturity Of Investments, No definition available. 
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- Definition Principal Repayment And Maturity Of Investments, After Year Four No definition available. 
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- Definition Principal Repayment And Maturity Of Investments, Remainder Of Fiscal Year No definition available. 
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- Definition Principal Repayment And Maturity Of Investments, Year Four No definition available. 
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- Definition Principal Repayment And Maturity Of Investments, Year One No definition available. 
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- Definition Principal Repayment And Maturity Of Investments, Year Three No definition available. 
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- Definition Principal Repayment And Maturity Of Investments, Year Two No definition available. 
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- Definition Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Cost of the investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- References No definition available. 
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