Balance Sheet Details

12 Months Ended

Dec. 31, 2021

Balance Sheet Related Disclosures [Abstract]

Balance sheet details

5.Balance sheet details

Inventories

The following table shows the components of inventory (in thousands):

	December 31,		December 31,
	2021		2020
Raw materials	$	17,260	$	12,882
Work in progress		2,297		3,135
Finished goods		12,614		7,001
Total inventories	$	32,171	$	23,018

Prepaid expenses and other current assets

The following table shows the components of prepaid expenses and other current assets (in thousands):

	December 31, 2021			December 31, 2020
Prepaid expenses:
Prepaid inventory	$	397		$	29
Prepaid rent		201			162
Prepaid insurance		1,873			55
Other		2,132			690
Other current assets:
Tax refund receivable		(127	)		1,114
Other		708			445
Total prepaid expenses and other current assets	$	5,184		$	2,495

Accrued expenses

The following table shows the components of accrued expenses (in thousands):

	December 31, 2021		December 31, 2020
Accrued expenses:
Accrued compensation and related benefits	$	9,117	$	5,563
Professional service fees		1,119		359
Purchases		2,483		2,065
Product warranty		1,760		969
Other		772		92
Total accrued expenses	$	15,251	$	9,048

For the product warranty analysis refer to Note 19.

Other current liabilities

The following table shows the components of other current liabilities (in thousands):

	December 31, 2021		December 31, 2020
Other current liabilities:
Customer deposits	$	1,018	$	624
Paycheck Protection Program loan (Note 16)		—		2,772
Income tax payable		2,476		468
Sales and use tax payable		1,403		566
Other		1,455		196
Total other current liabilities	$	6,352	$	4,626