STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Assumptions Used In Black-Scholes Model (Details) - $ / shares	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	0.00%	0.00%	41.00%
Risk-free interest rate	0.00%	0.00%
Risk-free interest rate, minimum			2.50%
Risk-free interest rate, maximum			3.00%
Weighted average expected term (in years)	0 years	0 years	4 years 6 months
Weighted average fair value of options granted (in dollars per share)	$ 0	$ 0	$ 8.19
Stock Purchase Right
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	84.00%	32.00%	41.00%
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	0.11%	1.79%	2.43%
Weighted average expected term (in years)	8 months 12 days	8 months 12 days	9 months 18 days
Weighted average fair value of options granted (in dollars per share)	$ 8.00	$ 5.66	$ 5.74

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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No definition available.

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- Definition

The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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No definition available.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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