4. BALANCE SHEET DETAIL (Tables)

12 Months Ended

Mar. 31, 2022

BALANCE SHEET DETAIL

Schedule of inventories

	March 31,
	2022		2021
	(In thousands)
Inventories:
Work-in-progress	$	3,085	$	1,561
Finished goods		1,555		2,764
Inventory at distributors		15		18
	$	4,655	$	4,343

Schedule of accounts receivable, net

	March 31,
	2022		2021
	(In thousands)
Accounts receivable, net:
Accounts receivable	$	4,599	$	3,785
Less: Allowances for doubtful accounts and other		(81)		(120)
	$	4,518	$	3,665

Schedule of prepaid expenses and other current assets

	March 31,
	2022		2021
	(In thousands)
Prepaid expenses and other current assets:
Prepaid tooling and masks	$	68	$	584
Other receivables		226		291
Other prepaid expenses and other current assets		1,261		612
	$	1,555	$	1,487

Schedule of property and equipment, net

	March 31,
	2022		2021
	(In thousands)
Property and equipment, net:
Computer and other equipment	$	18,415	$	18,359
Software		4,425		4,097
Land		3,900		3,900
Building and building improvements		3,735		3,735
Furniture and fixtures		102		102
Leasehold improvements		878		877
		31,455		31,070
Less: Accumulated depreciation		(24,096)		(23,742)
	$	7,359	$	7,328

Schedule of intangible assets

The following table summarizes the components of intangible assets and related accumulated amortization balances at March 31, 2022 and 2021, respectively (in thousands):

	As of March 31, 2022
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(2,197)		2,023
Software		80		(80)		—
Total	$	4,890	$	(2,867)	$	2,023

	As of March 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,964)		2,256
Software		80		(80)		—
Total	$	4,890	$	(2,634)	$	2,256

Estimated future amortization expense of intangible assets

As of March 31, 2022, the estimated future amortization expense of intangible assets in the table above is as follows (in thousands):

Fiscal year ending March 31,
2023	$	233
2024		233
2025		233
2026		233
2027		233
Thereafter		858
Total	$	2,023

Schedule of accrued expenses and other liabilities

	March 31,
	2022		2021
	(In thousands)
Accrued expenses and other liabilities:
Accrued compensation	$	5,524	$	4,173
Accrued commissions		232		217
Income taxes payable		127		198
Miscellaneous accrued expenses		967		932
	$	6,850	$	5,520