4. BALANCE SHEET DETAIL (Tables)

12 Months Ended

Mar. 31, 2020

BALANCE SHEET DETAIL

Schedule of inventories

	March 31,
	2020		2019
	(In thousands)
Inventories:
Work-in-progress	$	1,650	$	1,983
Finished goods		2,612		3,690
Inventory at distributors		20		12
	$	4,282	$	5,685

Schedule of accounts receivable, net

	March 31,
	2020		2019
	(In thousands)
Accounts receivable, net:
Accounts receivable	$	6,415	$	7,441
Less: Allowances for doubtful accounts and other		(85)		(102)
	$	6,330	$	7,339

Schedule of prepaid expenses and other current assets

	March 31,
	2020		2019
	(In thousands)
Prepaid expenses and other current assets:
Prepaid tooling and masks	$	707	$	535
Prepaid income taxes		79		39
Escrow deposit		—		1,000
Other receivables		211		321
Other prepaid expenses and other current assets		937		605
	$	1,934	$	2,500

Schedule of property and equipment, net

	March 31,
	2020		2019
	(In thousands)
Property and equipment, net:
Computer and other equipment	$	18,191	$	19,086
Software		4,086		4,058
Land		3,900		3,900
Building and building improvements		3,735		3,718
Furniture and fixtures		102		102
Leasehold improvements		874		848
		30,888		31,712
Less: Accumulated depreciation		(22,769)		(22,711)
	$	8,119	$	9,001

Schedule of other assets

	March 31,
	2020		2019
	(In thousands)
Other assets:
Non-current deferred income taxes	$	—	$	35
Deposits		128		125
	$	128	$	160

Schedule of intangible assets

The following table summarizes the components of intangible assets and related accumulated amortization balances at March 31, 2020 and 2019, respectively (in thousands):

	As of March 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,731)		2,489
Software		80		(80)		—
Total	$	4,890	$	(2,401)	$	2,489

	As of March 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets:
Product designs	$	590	$	(590)	$	—
Patents		4,220		(1,498)		2,722
Software		80		(80)		—
Total	$	4,890	$	(2,168)	$	2,722

Estimated future amortization expense of intangible assets

As of March 31, 2020, the estimated future amortization expense of intangible assets in the table above is as follows (in thousands):

Fiscal year ending March 31,
2021	$	233
2022		233
2023		233
2024		233
2025		233
Thereafter		1,324
Total	$	2,489

Schedule of accrued expenses and other liabilities

	March 31,
	2020		2019
	(In thousands)
Accrued expenses and other liabilities:
Accrued compensation	$	3,673	$	4,659
Purchased intellectual property		1,621		—
Accrued professional fees		—		60
Accrued commissions		270		304
Contingent consideration		—		492
Accrued retention payment		—		415
Miscellaneous accrued expenses		1,014		939
	$	6,578	$	6,869