Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Estimated Useful Lives of Property, Plant and Equipment

The cost of property, plant, and equipment is depreciated using the straight-line method over the following estimated useful lives of the respective assets, except for leasehold improvements, which are depreciated over the lesser of the estimated useful lives of the respective assets or the related lease terms.

Building	30 years
Leasehold improvements	3 to 5 years
Equipment and computers	3 to 5 years
Furniture and fixtures	5 years

Summary of Opening and Closing Balances of Contract Liabilities

The Company performs its obligations under a contract with a customer by transferring products and/or services in exchange for consideration from the customer. The Company typically invoices its customers as soon as control of a good and/or service is transferred and a receivable for the Company is established. The Company, however, recognizes a contract liability when a customer prepays for goods and/or services and the Company has not transferred control of the goods and/or services. The opening and closing balances of the Company’s contract liabilities are as follows (in thousands):

	December 31,
	2023			2022
Undelivered elements (training and installation)	$	449		$	447
Extended warranty contracts		2,259			2,082
Total deferred revenue		2,708			2,529
Less: long-term portion of deferred revenue		(256	)		(418	)
Deferred revenue – current	$	2,452		$	2,111

Summary of Disaggregation of Revenues Related to Geographic Areas

The Company’s revenues related to the following geographic areas were as follows (in thousands):

	Years Ended December 31,
	2023		2022		2021
United States	$	33,883	$	33,876	$	25,384
International		15,281		14,586		13,804
Net Revenue	$	49,164	$	48,462	$	39,188

Summary of Revenues Disaggregated by Timing of Goods and Services Transferred

Information regarding revenues disaggregated by the timing of when goods and services are transferred is as follows (in thousands):

	Years Ended December 31,
	2023		2022		2021
Revenue recognized over time	$	5,525	$	5,697	$	4,709
Revenue recognized at a point in time		43,639		42,765		34,479
Net Revenue	$	49,164	$	48,462	$	39,188

Summary of Sales by End Market

The Company’s sales by end market is as follows (in thousands):

	Years Ended December 31,
	2023		2022		2021
End-customer	$	33,883	$	33,876	$	25,384
Distributors		15,281		14,586		13,804
Net Revenue	$	49,164	$	48,462	$	39,188

Changes in Initial Product Warranty Accrual and Expenses Under Initial and Extended Warranties

Changes in the initial product warranty accrual and the expenses incurred under the Company’s initial and extended warranties were as follows (in thousands):

	Years Ended December 31,
	2023			2022			2021
Balance, beginning of period	$	1,653		$	1,086		$	1,132
Provision for estimated warranty cost		3,733			3,639			1,747
Warranty expenditures		(3,472	)		(3,072	)		(1,793	)
Balance, end of period		1,914			1,653			1,086
Less: long-term portion of warranty accrual		593			360			521
Current portion of warranty accrual	$	1,321		$	1,293		$	565

Summary of Income Statement Classification of Compensation Expense

The following table summarizes the income statement classification of compensation expense associated with share-based payments (in thousands):

	Years Ended December 31,
	2023		2022		2021
Cost of revenue	$	29	$	154	$	156
Sales and marketing		423		576		367
General and administrative		681		1,368		820
Engineering and development		99		205		319
Total	$	1,232	$	2,303	$	1,662

Assumptions on Estimation of Stock Option Fair Values

The stock option fair values were estimated using the Black-Scholes option-pricing model with the following weighted-average assumptions:

	Years Ended December 31,
	2023	2022	2021
Expected term (years)	N/A	N/A		6.1
Volatility	N/A	N/A		111	%
Annual dividend per share	N/A	N/A	$	—
Risk-free interest rate	N/A	N/A		1.0	%