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STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY (Tables)
 6 Months Ended
Sep. 30, 2025
Equity [Abstract]  
Schedule of Unvested Restricted Stock Units Roll Forward
Shares of common stock reserved for future issuance related to outstanding equity awards and employee equity incentive plans as of September 30, 2025, were as follows (in thousands):
Common Stock Reserved for Future Issuance
Stock options outstanding15 
Restricted stock units outstanding16,332 
Shares available under the 2017 Plan302 
Shares available under the 2022 Plan11,359 
Shares available for future issuance under ESPP5,460 
Total shares of common stock reserved33,468 
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following table presents stock-based compensation expense (in thousands):
 Three Months Ended September 30,Six Months Ended September 30,
 2025202420252024
Cost of service revenue$218 $824 $490 $1,948 
Cost of other revenue89 291 227 692 
Research and development1,132 3,494 2,522 8,317 
Sales and marketing1,786 2,153 3,785 5,101 
General and administrative2,138 2,613 4,691 6,119 
Total$5,363 $9,375 $11,715 $22,177 
As of September 30, 2025, unrecognized stock-based compensation expense by award type and their expected weighted-average recognition periods are summarized as follows (in thousands, except years):
RSUPSUESPP
Unrecognized stock-based compensation expense$21,518 $2,721 $1,160 
Weighted-average amortization period2.1 years1.1 years0.8 years
Schedule of Disclosure of Share-Based Compensation Arrangements By Share-Based Payment Award
The following table presents the RSU activity (shares in thousands):
Number of SharesWeighted Average Grant Date Fair ValueWeighted Average Remaining Contractual Term (in Years)
Balance as of March 31, 202510,229 $2.67 0.94
Granted7,062 1.84 
Vested and released(4,247)2.79 
Forfeited(820)2.52 
Balance as of September 30, 202512,224 $2.16 1.17
The following table presents the PSU activity (shares in thousands):
Number of SharesWeighted Average Grant Date Fair ValueWeighted Average Remaining Contractual Term (in Years)
Balance as of March 31, 20253,880 $2.88 0.85
Granted11,295 1.82 
Vested and released(676)1.88 
Forfeited(392)5.28 
Balance as of September 30, 20254,107 $2.48 1.14