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4. BALANCE SHEET DETAIL (Tables)

9 Months Ended

Dec. 31, 2020

BALANCE SHEET DETAIL

Schedule of inventories

		December 31, 2020			March 31, 2020
		(In thousands)
Inventories:
Work-in-progress		$	1,924		$	1,650
Finished goods			2,572			2,612
Inventory at distributors			27			20
		$	4,523		$	4,282

Schedule of accounts receivable, net

		December 31, 2020			March 31, 2020
		(In thousands)
Accounts receivable, net:
Accounts receivable		$	4,072		$	6,415
Less: Allowances for doubtful accounts and other			(60)			(85)
		$	4,012		$	6,330

Schedule of prepaid expenses and other current assets

		December 31, 2020			March 31, 2020
		(In thousands)
Prepaid expenses and other current assets:
Prepaid tooling and masks		$	783		$	707
Prepaid income taxes			45			79
Other receivables			234			211
Other prepaid expenses and other current assets			917			937
		$	1,979		$	1,934

Schedule of property and equipment, net

		December 31, 2020			March 31, 2020
		(In thousands)
Property and equipment, net:
Computer and other equipment		$	18,289		$	18,191
Software			4,097			4,086
Land			3,900			3,900
Building and building improvements			3,735			3,735
Furniture and fixtures			102			102
Leasehold improvements			877			874
			31,000			30,888
Less: Accumulated depreciation			(23,556)			(22,769)
		$	7,444		$	8,119

Schedule of other assets

		December 31, 2020			March 31, 2020
		(In thousands)
Other assets:
Deposits		$	139		$	128
		$	139		$	128

Schedule of intangible assets

The following tables summarize the components of intangible assets and related accumulated amortization balances at December 31, 2020 and March 31, 2020 (in thousands):

		As of December 31, 2020
		Gross Carrying Amount			Accumulated amortization			Net Carrying Amount
Intangible assets:
Product designs		$	590		$	(590)		$	—
Patents			4,220			(1,906)			2,314
Software			80			(80)			—
Total		$	4,890		$	(2,576)		$	2,314

		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

Estimated future amortization expense of intangible assets

As of December 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 (Remaining three months)		$	58
2022			233
2023			233
2024			233
2025			233
Thereafter			1,324
Total		$	2,314

Schedule of accrued expenses and other liabilities

		December 31, 2020			March 31, 2020
		(In thousands)
Accrued expenses and other liabilities:
Accrued compensation		$	3,959		$	3,673
Purchased intellectual property			—			1,621
Accrued commissions			223			270
Income taxes payable			211			143
Miscellaneous accrued expenses			1,132			871
		$	5,525		$	6,578

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