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Share-based Compensation Arrangement by Share-based Payment Award, Number of Equal Annual Vesting Installments

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for 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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Amount of noncash expense for share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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STOCK-BASED COMPENSATION - Narrative (Details)	3 Months Ended			6 Months Ended		12 Months Ended
STOCK-BASED COMPENSATION - Narrative (Details)	Sep. 30, 2025 USD ($) shares	Jun. 30, 2025 $ / shares shares	Sep. 30, 2024 USD ($) shares	Sep. 30, 2025 USD ($) installment shares	Sep. 30, 2024 USD ($) shares	Mar. 31, 2025 $ / shares shares	Mar. 31, 2024 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation \| $				$ 25,013,000	$ 28,468,000
Number of equal annual vesting installments \| installment				3
Options outstanding, number of underlying shares (in shares)	1,506,000			1,506,000		1,356,000
Employees and Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation \| $	$ 11,200,000		$ 11,000,000.0	$ 21,900,000	25,400,000
Unrecognized compensation costs \| $	78,300,000			$ 78,300,000
Unrecognized compensation costs, period for recognition				2 years 3 months 3 days
Marketing and Consulting Partners
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs \| $	61,400,000			$ 61,400,000
Unrecognized compensation costs, period for recognition				8 years 10 months 24 days
Share based compensation \| $	$ 1,600,000		$ 1,800,000	$ 3,400,000	$ 3,700,000
Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term				10 years
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, number of underlying shares (in shares)	1,300,000			1,300,000
Performance Based Restricted Stock Units, Granted in Fiscal 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation \| $	$ 0			$ 0
2005 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock awards \| $				$ 150,000
Vesting percentage	100.00%			100.00%
2005 Plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	8,400,000			8,400,000
2005 Plan \| Common Class C
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	20,300,000			20,300,000
2005 Plan \| Performance Based Restricted Stock Units \| President and CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)		2,000,000				2,000,000
Shares granted (in dollars per share) \| $ / shares		$ 4.52				$ 4.13
2005 Plan \| Performance Based Restricted Stock Units \| Certain Executives and Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)							900,000
2005 Plan \| Performance Based Restricted Stock Units, Granted in Fiscal 2024 \| Certain Executives and Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in dollars per share) \| $ / shares							$ 6.93
2005 Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (over)				2 years
2005 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (over)				5 years
Director Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock awards \| $				$ 100,000
Obligation to issue share (in shares)	1			1
Period shares delivered following termination of director's service				6 months
ESPPs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP discount rate from fair market value				15.00%
ESPPs \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	2,700,000			2,700,000
ESPPs \| Common Class C
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	1,900,000			1,900,000
ESPP shares granted during period (in shares)	200,000		100,000	300,000	200,000