INCOME TAXES - UNCERTAIN TAX POSITIONS (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Increase in interest and penalties	$ 71	$ 232	$ 2,363
Gross amount of interest and penalties accrued	6,757	6,686
Gross unrecognized tax benefits including interest and penalties	134,269
Gross unrealized tax benefits, which would affect effective tax rate, if realized	30,658
Possible decrease in unrecognized tax benefits	4,737
Possible reduction of unrecognized tax benefits within the next 12 months	24,983
Aggregate changes to the liability for gross uncertain tax position, excluding interest and penalties
Balance, beginning of period	132,320	122,056	116,085
Additions:
Current year tax positions	8,596	13,281	23,007
Prior year tax positions	1,404	288	7,406
Reduction of prior year tax positions	(14,270)	(1,700)	(436)
Lapse of statute of limitations	(538)	(1,605)	(24,006)
Balance, end of period	$ 127,512	$ 132,320	$ 122,056

Unrecognized Tax Benefits, Additions [Abstract]

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date, excluding interest and penalties.

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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