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Inventory (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Inventory Disclosure [Abstract]    
Raw materials $ 5,167 $ 2,412
Work in process 1,719 1,865
Sub-assembly 809 1,628
Finished goods 711 425
Total 8,406 6,330
Inventory write-off $ 2,800 $ 200