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BALANCE SHEET INFORMATION (Tables)
 6 Months Ended
Sep. 30, 2021
Balance Sheet Related Disclosures [Abstract]  
Schedule of manufacturing inventories Manufacturing inventories
September 30, 2021March 31, 2021
   Finished goods:
      Manufactured finished goods $11,013 $12,452 
      Distributor inventory136 238 
         Total finished goods11,149 12,690 
   Work in progress3,653 2,074 
   Raw materials14,046 9,703 
Total manufacturing inventories$28,848 $24,467 
Schedule of service part inventories
Service parts inventories
September 30, 2021March 31, 2021
   Finished goods$17,817 $18,773 
   Component parts5,747 4,648 
Total service parts inventories$23,564 $23,421 
Summary of carrying value of intangible assets
Intangibles, net
September 30, 2021March 31, 2021
GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
   Developed technology$6,400 $(1,425)$4,975 $4,700 $(473)$4,227 
   Customer lists4,600 (443)4,157 900 (90)810 
Intangible assets, net$11,000 $(1,868)$9,132 $5,600 $(563)$5,037 
Future expected amortization expense for intangible assets
As of September 30, 2021, the future expected amortization expense for intangible assets is as follows (in thousands):

Fiscal year ending Estimated future amortization expense
Remainder of 2022$1,796 
20233,641 
20242,490 
Thereafter1,205 
Total$9,132 
Goodwill rollforward Goodwill
Amount
Balance at March 31, 2021$3,466 
Goodwill acquired6,796 
Balance at September 30, 2021
$10,262