BALANCE SHEET INFORMATION (Tables)

12 Months Ended

Mar. 31, 2023

Balance Sheet Related Disclosures [Abstract]

Schedule of manufacturing inventories

Certain significant amounts included in the Company's consolidated balance sheets consist of the following (in thousands):

Manufacturing inventories	March 31,
	2023		2022
Manufactured finished goods	$	6,958	$	14,607
Work in progress	1,304		2,546
Raw materials	11,179		16,393
Total manufacturing inventories	$	19,441	$	33,546

Schedule of service inventories

Service inventories	March 31,
	2023		2022
Finished goods	$	19,834	$	19,234
Component parts	5,470		5,020
Total service inventories	$	25,304	$	24,254

Schedule of property and equipment

Property and equipment are carried at cost, less accumulated depreciation and amortization, computed on a straight-line basis over the estimated useful lives of the assets as follows:

Machinery and equipment	3 to 5 years
Computer equipment	3 to 5 years
Other software	3 years
Furniture and fixtures	5 years
Other office equipment	5 years
Leasehold improvements	Shorter of useful life or life of lease

Property and equipment, net	March 31,
	2023		2022
Machinery and equipment, and software	$	46,170	$	46,831
Leasehold improvements	14,405		6,029
Furniture and fixtures	848		838
	61,423		53,698
Less: accumulated depreciation	(44,868)		(40,845)
Total property, plant and equipment, net	$	16,555	$	12,853

Summary of carrying value of intangible assets

Intangibles, net	March 31, 2023						March 31, 2022
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Developed technology	$	9,013	$	(6,269)	$	2,744	$	9,208	$	(3,121)	$	6,087
Customer lists	4,398		(2,201)		2,197		4,600		(1,103)		3,497
Intangible assets, net	$	13,411	$	(8,470)	$	4,941	$	13,808	$	(4,224)	$	9,584

Future expected amortization expense for intangible assets

As of March 31, 2023, the future expected amortization expense for intangible assets is as follows (in thousands):

Fiscal year ending	Estimated future amortization expense
2024	$	3,488
2025	1,453
Thereafter	—
Total	$	4,941

Goodwill rollforward

Goodwill	Amount
Balance at March 31, 2022	$	12,969
Goodwill acquired	—
Balance at March 31, 2023	$	12,969

Schedule of other accrued liabilities

Other accrued liabilities	March 31,
	2023		2022
Accrued expenses	$	1,988	$	4,984
Asset retirement obligation	2,513		4,590
Accrued income taxes	1,509		943
Accrued warranty	2,094		1,899
Accrued interest	494		278
Lease liability	1,364		1,727
Other	3,704		2,141
Total other accrued liabilities	$	13,666	$	16,562

Schedule of accrued warranty balance

The following table details the change in the accrued warranty balance (in thousands):

	Year Ended March 31,
	2023		2022		2021
Balance as of April 1	$	1,899	$	2,383	2,668
Current period accruals	3,477		3,717		4,699
Adjustments to prior estimates	(18)		(156)		(472)
Charges incurred	(3,264)		(4,045)		(4,512)
Balance as of March 31	$	2,094	$	1,899	$	2,383