4. BALANCE SHEET DETAIL

12 Months Ended

Mar. 31, 2022

BALANCE SHEET DETAIL

NOTE 4 - BALANCE SHEET DETAIL

NOTE 4—BALANCE SHEET DETAIL

	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

	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

	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

	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

Depreciation expense was $771,000, $981,000 and $1.2 million for the years ended March 31, 2022, 2021 and 2020, respectively.

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

Amortization of intangible assets of $233,000, $233,000 and $223,000 was included in cost of revenues for the years ended March 31, 2022, 2021 and 2020, respectively.

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

	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