Balance Sheet Components

12 Months Ended

Aug. 31, 2022

Disclosure Text Block Supplement [Abstract]

Balance Sheet Components

3. BALANCE SHEET COMPONENTS

Inventories

Inventories as of August 31, 2022 and 2021 consist of the following (in thousands):

	August 31,
	2022		2021
Raw materials	$	493	$	564
Work in process		953		1,217
Finished goods		2,338		2,156
Total	$	3,784	$	3,937

Inventory write‑downs to estimated net realizable values for the years ended August 31, 2022 and 2021 were $807 thousand and $659 thousand, respectively.

Property, Plant and Equipment

Property, plant and equipment as of August 31, 2022 and 2021 consist of the following (in thousands):

	August 31,
	2022			2021
Buildings and improvements	$	13,698		$	14,997
Machinery and equipment		27,649			34,421
Leasehold improvements		161			176
Other equipment		2,283			2,547
Construction in progress		81			—
Total property, plant and equipment		43,872			52,141
Less: Accumulated depreciation and amortization		(39,733	)		(46,897	)
Property, plant and equipment, net	$	4,139		$	5,244

Depreciation expense was $915 thousand and $879 thousand for the years ended August 31, 2022 and 2021, respectively.

Property, plant and equipment pledged as collateral for the Company’s notes payable were $2.8 million and $3.5 million as of August 31, 2022 and 2021, respectively.

Intangible Assets

Intangible assets as of August 31, 2022 and 2021 consist of the following (in thousands):

	August 31, 2022
	Weighted
	Average	Gross				Net
	Amortization	Carrying		Accumulated		Carrying
	Period (Years)	Amount		Amortization		Amount
Patents and trademarks	15	$	580	$	478	$	102
Acquired technology	5		335		335		—
Total		$	915	$	813	$	102

	August 31, 2021
	Weighted
	Average	Gross				Net
	Amortization	Carrying		Accumulated		Carrying
	Period (Years)	Amount		Amortization		Amount
Patents and trademarks	15	$	627	$	501	$	126
Acquired technology	5		367		367		—
Total		$	994	$	868	$	126

Amortization expense was $23 thousand and $18 thousand for the years ended August 31, 2022 and 2021, respectively.

No impairment charge was recognized in the year ended August 31, 2022 and 2021.

The estimated future amortization expense for the Company’s intangible assets as of August 31, 2022 is as follows (in thousands):

Years Ending August 31,	Total
2023	$	10
2024		9
2025		9
2026		9
2027		9
Thereafter		56
Total	$	102

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities as of August 31, 2022 and 2021 consist of the following (in thousands):

	August 31,
	2022		2021
Accrued compensation and benefits	$	1,678	$	1,694
Customer deposits		346		293
Accrued business expenses		176		200
Accrued professional service fees		100		283
Other (individually less than 5% of total accrued expenses and other current liabilities)		402		313
Total	$	2,702	$	2,783