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BALANCE SHEET INFORMATION
 12 Months Ended
Mar. 31, 2024
Balance Sheet Related Disclosures [Abstract]  
BALANCE SHEET INFORMATION BALANCE SHEET INFORMATION
Certain significant amounts included in the Company's consolidated balance sheets consist of the following (in thousands):
Manufacturing inventoriesMarch 31,
202420232022
   Manufactured finished goods$7,074 $6,958 $14,607 
   Work in progress769 1,304 2,546 
   Raw materials9,910 11,179 16,393 
      Total manufacturing inventories$17,753 $19,441 $33,546 

Service inventoriesMarch 31,
202420232022
Finished goods$3,660 $19,834 $19,234 
Component parts6,123 5,470 5,020 
   Total service inventories$9,783 $25,304 $24,254 
Property and equipment, netMarch 31,
202420232022
Machinery and equipment, and software$49,095 $48,534 $47,777 
Leasehold improvements12,473 14,405 6,029 
Furniture and fixtures1,109 863 844 
 62,677 63,802 54,650 
Less: accumulated depreciation(50,649)(47,247)(41,797)
   Total property, plant and equipment, net$12,028 $16,555 $12,853 

Depreciation expense for property and equipment amounted to $6.0 million, $5.5 million, and $5.7 million for the years ended March 31, 2024, 2023, and 2022, respectively.

Intangibles, netMarch 31, 2024March 31, 2023March 31, 2022
GrossAccumulated AmortizationNetGrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
   Developed technology$9,013 $(8,550)$463 $9,013 $(6,269)$2,744 $9,208 $(3,121)$6,087 
   Customer lists4,398 (3,192)1,206 4,398 (2,201)2,197 4,600 (1,103)3,497 
Intangible assets, net$13,411 $(11,742)$1,669 $13,411 $(8,470)$4,941 $13,808 $(4,224)$9,584 

Intangible assets amortization expense was $3.3 million, $4.6 million, and $3.7 million for the years ended March 31, 2024, 2023, and 2022, respectively. As of March 31, 2024, the remaining weighted-average amortization period for definite-lived intangible assets was approximately 0.9 years. The Company recorded amortization of developed technology in cost of product revenue, and customer lists in sales and marketing expenses in the consolidated statements of operations.

As of March 31, 2024, the future expected amortization expense for intangible assets is as follows (in thousands):

Fiscal year ending Estimated future amortization expense
2025$1,388 
Thereafter281 
Total$1,669 

GoodwillAmount
Balance at March 31, 2022$12,969 
Goodwill acquired— 
Balance at March 31, 2023$12,969 
Goodwill acquired— 
Balance at March 31, 2024
$12,969 
Other long-term assetsMarch 31,
202420232022
Capitalized SaaS implementation costs for internal use$15,349 $11,483 $6,261 
Capitalized debt costs1,923 1,690 1,779 
Contract asset1,477 1,247 699 
Deferred taxes734 1,054 866 
Other257 372 320 
   Total other long-term assets$19,740 $15,846 $9,925 

Other accrued liabilitiesMarch 31,
202420232022
Accrued expenses
$4,251 $1,988 $4,984 
Asset retirement obligation
2,069 2,513 4,590 
Accrued income taxes
1,044 1,509 943 
Accrued warranty
1,545 2,094 1,899 
Accrued interest
524 494 278 
Lease liability1,256 1,364 1,727 
Other
3,297 3,704 2,141 
   Total other accrued liabilities$13,986 $13,666 $16,562 

The following table details the change in the accrued warranty balance (in thousands):
 Year Ended March 31,
202420232022
Balance as of April 1$2,094 $1,899 2,383 
   Current period accruals2,563 3,477 3,717 
   Adjustments to prior estimates(141)(18)(156)
   Charges incurred(2,971)(3,264)(4,045)
Balance as of March 31$1,545 $2,094 $1,899