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Property, plant and equipment, net
 6 Months Ended
Sep. 30, 2026
Property, Plant, and Equipment [Abstract]  
Property, plant and equipment, net Property, plant and equipment, net
Property, plant and equipment, net consisted of the following:
September 30, 2026March 31, 2026
Office equipment$1,897 $1,897 
Computer equipment2,516 2,441 
Plant, manufacturing and laboratory equipment12,727 12,325 
Leasehold improvements2,504 2,504 
Capitalized software9,361 9,736 
Construction in progress139 802 
     Total property, plant and equipment29,144 29,705 
Less: Accumulated depreciation(18,441)(16,731)
     Property, plant and equipment, net$10,703 $12,974 
Depreciation and amortization expense, including amortization on capitalized software, was $0.8 million and $1.7 million for the three and six months ended September 30, 2026 and $0.8 million and $1.7 million for the three and six months ended September 30, 2025. Amortization on capitalized software for the three and six months ended September 30, 2026 was $0.3 million and $0.6 million, respectively, and $0.3 million and $0.6 million for the three and six months ended September 30, 2025. Depreciation and amortization expense is recorded within research and development and selling, general and administrative expenses in the consolidated statement of operations.