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BALANCE SHEET INFORMATION (Tables)
 9 Months Ended
Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]  
Schedule of manufacturing inventories Manufacturing inventories
December 31, 2021March 31, 2021
   Finished goods:
      Manufactured finished goods $13,111 $12,452 
      Distributor inventory170 238 
         Total finished goods13,281 12,690 
   Work in progress2,820 2,074 
   Raw materials17,811 9,703 
Total manufacturing inventories$33,912 $24,467 
Schedule of service part inventories
Service parts inventories
December 31, 2021March 31, 2021
   Finished goods$17,389 $18,773 
   Component parts5,143 4,648 
Total service parts inventories$22,532 $23,421 
Summary of carrying value of intangible assets
Intangibles, net
December 31, 2021March 31, 2021
GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
   Developed technology$9,208 $(2,293)$6,915 $4,700 $(473)$4,227 
   Customer lists4,600 (777)3,823 900 (90)810 
Intangible assets, net$13,808 $(3,070)$10,738 $5,600 $(563)$5,037 
Future expected amortization expense for intangible assets
As of December 31, 2021, the future expected amortization expense for intangible assets is as follows (in thousands):

Fiscal year ending Estimated future amortization expense
Remainder of 2022$1,129 
20234,568 
20243,417 
Thereafter1,624 
Total$10,738 
Goodwill rollforward Goodwill
Amount
Balance at March 31, 2021$3,466 
Goodwill acquired6,796 
Balance at December 31, 2021
$10,262