Related Party Transactions - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction
Revenue, net	$ 4,670	$ 4,493	$ 15,563	$ 13,319
Cost of goods sold	4,595	7,162	12,226	14,444
Research and development	2,839	2,325	8,730	5,895
General and administrative	4,412	3,457	11,870	9,818
Interest expense	0	184	8	550
Related Party
Related Party Transaction
Revenue, net	1,981	2,917	4,711	6,081
Related Party \| GaNovation
Related Party Transaction
Research and development	116	141	200	330
Related Party \| GaNovation \| Product sale
Related Party Transaction
Revenue, net	313	1,774	579	3,246
Related Party \| GaNovation \| Service fees
Related Party Transaction
Revenue, net	69	0	200	0
Related Party \| GaNovation \| Inventory purchase
Related Party Transaction
Cost of goods sold	88	96	201	345
Related Party \| GaNovation \| Fixed asset purchase
Related Party Transaction
Cost of goods sold	124	0	192	0
Related Party \| GaNovation \| Cost of goods sold
Related Party Transaction
Cost of goods sold	1,511	1,030	3,963	2,738
Related Party \| GaNovation \| Consumption tax
Related Party Transaction
General and administrative	92	91	234	311
Related Party \| GaNovation \| Employee and related benefits
Related Party Transaction
General and administrative	33	35	94	124
Related Party \| Yaskawa
Related Party Transaction
Revenue, net	223	221	666	991
Related Party \| Nexperia
Related Party Transaction
Interest expense	0	184	8	550
Related Party \| Nexperia \| Product sale
Related Party Transaction
Revenue, net	1,445	923	3,465	1,778
Related Party \| Nexperia \| License and service fee income
Related Party Transaction
Revenue, net	0	0	0	66
Related Party \| Nexperia \| Reimbursements in license maintenance fee
Related Party Transaction
Revenue, net	$ 25	$ 13	$ 75	$ 88

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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