Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Disaggregation of Revenue

The following table presents total revenues by geographic area based on the location products were shipped to and services provided (in thousands):

	Year ended December 31,
	2021		2020		2019
United States	$	14,790	$	8,328	$	7,035
Americas, excluding United States		866		436		361
Europe, Middle East and Africa		10,588		5,870		2,368
Asia and Pacific		7,334		4,270		1,649
Total	$	33,578	$	18,904	$	11,413

Schedule of Accounts Receivable, Allowance for Doubtful Accounts

Changes in the Company’s allowance for expected credit losses were as follows (in thousands):

	Year Ended December 31, 2021		Year Ended December 31, 2020			Year Ended December 31, 2019
Beginning balance	$	128	$	117		$	—
Provisions		379		67			169
Uncollectible accounts written off, net of recoveries		—		(56	)		(52	)
Ending balance	$	507	$	128		$	117

Schedules of Concentration of Risk

Accounts receivable from the Company’s major customers representing 10% or more of total accounts receivable was as follows:

	December 31, 2021			December 31, 2020
Customer A		11	%		*
Customer B		*			23	%
Customer C		*			13	%

* Customer accounted for less than 10% of total accounts receivable in the period.