Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Allowances for Accounts Receivable

The allowances for accounts receivable consisted of the following:

	September 30, 2023		December 31, 2022
Credit loss provision	$	110	$	92
Credit allowances		24		40
Total allowances	$	134	$	132

Summary of Allowance for credit losses

The following table summarizes the allowance for credit losses activity during the nine months ended September 30, 2023:

Balance at December 31, 2022	$	92
Current period allowance for credit losses		18
Balance at September 30, 2023	$	110

Summary of Inventories, Net

Inventories, net consisted of the following:

	September 30, 2023		December 31, 2022
Raw materials	$	8,083	$	9,064
Work-in-process		1,288		1,076
Finished goods		7,126		8,778
Inventories, net	$	16,497	$	18,918

Summary of Property and Equipment

Property and equipment consisted of the following:

	September 30, 2023			December 31, 2022
Building	$	6,922		$	6,922
Computers and office equipment		10,772			10,217
Manufacturing and test equipment		14,192			14,661
Furniture and fixtures		1,491			1,475
Leasehold improvements		1,965			1,965
Motor vehicles		20			20
Total property and equipment		35,362			35,260
Less: Accumulated depreciation and amortization		(27,580	)		(27,026	)
Land		1,770			1,770
Property and equipment, net	$	9,552		$	10,004

Summary of Accrued Liabilities

Accrued liabilities consisted of the following:

	September 30, 2023		December 31, 2022
Inventory receipts	$	2,024	$	3,720
Paid time off		1,229		1,001
Payroll and other employee benefits		957		4,318
Professional fees and contractors		607		346
Deferred revenues		522		495
Operating leases		516		527
Employee stock purchase plan		434		232
Warranties		296		317
Income and sales taxes		227		836
Customer refunds for estimated returns		131		235
Real estate taxes		125		158
Finance leases		60		51
Other		234		369
Total	$	7,362	$	12,605

Summary of Long-term Liabilities

Long-term liabilities consisted of the following:

	September 30, 2023		December 31, 2022
Operating leases	$	2,931	$	3,327
Deferred revenue		173		181
Finance leases		129		73
Other		33		43
Total	$	3,266	$	3,624