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Inventory
 6 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventory Inventory
Inventory consists of the following as of the dates presented (in thousands):
September 30, 2022March 31, 2022
Raw materials$4,074 $2,412 
Work in process2,164 1,865 
Sub-assembly1,961 1,677 
Finished goods767 376 
Total$8,966 $6,330 
The Company recorded inventory write-off of $19 thousand and $60 thousand for the three months ended September 30, 2022 and 2021, respectively. The Company recorded inventory write-off of $56 thousand and $194 thousand for the six months ended September 30, 2022 and 2021, respectively.