SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Revenue, Major Customer [Line Items]
Revenues	$ 2,050,527	$ 1,666,352	$ 799,141
Single non-related party
Revenue, Major Customer [Line Items]
Revenues	$ 317,536	$ 296,257	$ 48,430

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details