STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Mar. 31, 2024

Equity [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table presents stock-based compensation expense (in thousands):

	Years Ended March 31,
	2024		2023		2022
Cost of service revenue	$	4,993	$	9,236	$	8,815
Cost of other revenue	1,918		3,531		4,717
Research and development	24,112		29,581		32,655
Sales and marketing	15,271		24,921		47,202
General and administrative	15,616		22,267		39,942
Total	$	61,910	$	89,536	$	133,331

Disclosure of Share-Based Compensation Arrangements By Share-Based Payment Award

The following table presents the RSU activity during the years ended March 31, 2024, 2023, and 2022 (shares in thousands):

	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (in Years)
Balance at March 31, 2021	8,646	$	19.27	1.85
Granted	8,333	21.37
Vested and released	(5,146)	19.82
Forfeited	(2,458)	20.85
Balance at March 31, 2022	9,375	20.41		2.11
Granted	13,297	5.71
Vested and released	(5,275)	19.18
Forfeited	(4,404)	12.46
Balance at March 31, 2023	12,993	8.56		1.84
Granted	7,186	3.85
Vested and released	(7,613)	8.87
Forfeited	(2,241)	7.13
Balance at March 31, 2024	10,325	$	5.36	1.75

The following table presents the PSU activity during the years ended March 31, 2024, 2023, and 2022 (shares in thousands):

	Number of Shares	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (in Years)
Balance at March 31, 2021	1,576	$	27.33	1.24
Granted	497	30.41
Granted for performance achievement(1)	20	30.41
Vested and released	(250)	17.15
Forfeited	(817)	23.45
Balance at March 31, 2022	1,026	35.36		0.89
Granted	853	7.31
Granted for performance achievement(1)	24	7.31
Vested and released	(128)	25.65
Forfeited	(1,151)	28.11
Balance at March 31, 2023	624	11.30		1.45
Granted	2,023	3.25
Forfeited	(116)	21.83
Balance at March 31, 2024	2,531	$	4.38	1.16

(1) Represents additional PSUs awarded as a result of the achievement of performance goals above the performance targets established at grant.

The PSUs granted were valued for compensation expense purposes at weighted average share price determined by the Monte Carlo simulations using volatility factors and risk-free rates as follows:

Year Ended March 31,	Value per Weighted Average Share		Volatility Range			Risk-Free Interest Rate Range
2024	$	3.25	68.85%	—	68.97%	4.03%	—	4.08%
2023	$	7.05	51.96%	—	69.30%	3.15%	—	4.42%
2022	$	30.98	58.65%	—	59.67%	0.34%	—	0.40%

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

The estimated fair value of stock purchase rights granted under the Employee Stock Purchase Plan was estimated using the Black-Scholes pricing model with the following weighted-average assumptions:

	Years Ended March 31,
	2024	2023	2022
Expected volatility	75%	72%	45%
Expected dividend yield	—	—	—
Risk-free interest rate	5.26%	3.30%	0.57%
Weighted average expected term	0.8 years	0.8 years	0.8 years
Weighted average fair value of rights granted	$1.31	$2.09	$5.81