Quarterly report pursuant to Section 13 or 15(d)

BALANCE SHEET INFORMATION

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BALANCE SHEET INFORMATION
 9 Months Ended
Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]  
BALANCE SHEET INFORMATION BALANCE SHEET INFORMATION
Certain significant amounts included in the Company's condensed consolidated balance sheets consist of the following (in thousands):

Manufacturing inventories
December 31, 2022 March 31, 2022
   Finished goods $ 13,639  $ 14,607 
   Work in progress 2,268  2,546 
   Raw materials 16,495  16,393 
Total manufacturing inventories $ 32,402  $ 33,546 

Service parts inventories
December 31, 2022 March 31, 2022
   Finished goods $ 21,215  $ 19,234 
   Component parts 4,607  5,020 
Total service parts inventories $ 25,822  $ 24,254 

Intangibles, net
December 31, 2022 March 31, 2022
Gross Accumulated Amortization Net Gross Accumulated Amortization Net
   Developed technology $ 9,013  $ (5,442) $ 3,571  $ 9,013  $ (2,926) $ 6,087 
   Customer lists 4,398  (1,472) 2,926  4,398  (901) 3,497 
Intangible assets, net $ 13,411  $ (6,914) $ 6,497  $ 13,411  $ (3,827) $ 9,584 

Intangible assets amortization expense was $0.7 million and $1.2 million for the three months ended December 31, 2022 and 2021, respectively and $3.1 million and $2.5 million for the nine months ended December 31, 2022 and 2021, respectively. As of December 31, 2022, the remaining weighted-average amortization period for definite-lived intangible assets was approximately 1.8 years.

As of December 31, 2022, the future expected amortization expense for intangible assets is as follows (in thousands):
Fiscal year ending Estimated future amortization expense
Remainder of 2023 $ 1,147 
2024 3,523 
2025 1,827 
Thereafter — 
Total $ 6,497 


Goodwill

As of December 31, 2022 and March 31, 2022, goodwill was $13.0 million. There were no impairments to goodwill during the nine months ended December 31, 2022 and 2021.