INCOME TAXES - Schedule of income tax expenses (Details) - USD ($) $ in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025  | 
Mar. 31, 2024  | 
Mar. 31, 2023  | 
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| Income Tax Disclosure [Abstract] | |||
| Current income tax charge - Federal | $ 4,054 | $ 34,623 | $ 22,387 | 
| Current income tax charge - Foreign | 44,341 | 24,573 | 21,406 | 
| Current income tax charge | 48,395 | 59,196 | 43,793 | 
| Deferred income tax charge - Federal | (12,715) | 3,695 | (2,606) | 
| Deferred income tax charge - Foreign | (7,255) | (2,472) | 1,589 | 
| Deferred income tax charge | (19,970) | 1,223 | (1,017) | 
| Income tax expense | $ 28,425 | $ 60,419 | $ 42,776 | 
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- Definition Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount of deferred federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred national tax expense (benefit) for non-US (United States of America) jurisdiction. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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