Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash and Cash Equivalents

The Company’s cash and cash equivalents consist of the following (in thousands):

	March 31, 2022		December 31, 2021
Cash	$	7,799	$	5,131
Cash equivalents:
Money market funds(1)	152,984		177,513
Total cash and cash equivalents	$	160,783	$	182,644

(1)The Company maintains a cash sweep account which is included in money market funds as of March 31, 2022. Cash is invested in the short-term money market funds, which is a cash sweep for uninvested cash that earns interest.

Reconciliation of cash, cash equivalents and restricted cash as shown in the condensed consolidated statement of cash flows to the respective accounts within the condensed consolidated balance sheet is as follows (in thousands):

	As of March 31,
	2022		2021
Cash and cash equivalents	$	160,783	$	257,165
Restricted cash, current	977		276
Restricted cash, non-current	1,035		1,004
Total cash, cash equivalents and restricted cash	$	162,795	$	258,445

Schedule of Restricted Cash

Reconciliation of cash, cash equivalents and restricted cash as shown in the condensed consolidated statement of cash flows to the respective accounts within the condensed consolidated balance sheet is as follows (in thousands):

	As of March 31,
	2022		2021
Cash and cash equivalents	$	160,783	$	257,165
Restricted cash, current	977		276
Restricted cash, non-current	1,035		1,004
Total cash, cash equivalents and restricted cash	$	162,795	$	258,445

Schedule of Inventory

Inventory, consisting of material, direct and indirect labor, and manufacturing overhead, consists of the following (in thousands):

	March 31, 2022		December 31, 2021
Raw materials	$	3,288	$	2,401
Work in process	2,280		1,951
Finished goods	6,051		3,096
Total inventory	$	11,619	$	7,448

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following (in thousands):

	March 31, 2022		December 31, 2021
Prepaid expenses	$	1,408	$	1,970
Prepaid insurance	108		1,355
Receivable from contract manufacturer	1,343		1,344
Grant receivable	—		779
Security deposit	76		118
Value-added tax (VAT) receivable	71		—
Total prepaid and other current assets	$	3,006	$	5,566

Schedule of Property, Plant and Equipment

Property and equipment consists of the following (in thousands):

	Estimated Useful Life (in years)	March 31, 2022		December 31, 2021
Machinery and equipment	3	$	8,593	$	8,404
Computer equipment	3	504		498
Automotive and vehicle hardware	5	93		93
Software	3	104		104
Furniture and fixtures	7	730		730
Construction in progress		1,923		1,700
Leasehold improvements	Shorter of useful life or lease term	9,310		9,265
		21,257		20,794
Less: Accumulated depreciation		(12,289)		(10,740)
Property and equipment, net		$	8,968	$	10,054

Schedule of Finite-Lived Intangible Assets

The following tables present acquired intangible assets, net as of March 31, 2022 and December 31, 2021 (in thousands):

		March 31, 2022
	Estimated Useful Life (in years)	Gross Carrying amount		Accumulated Amortization		Net Book Value
Developed technology	8	$	15,900	$	(828)	$	15,072
Vendor relationship	3	6,600		(917)		5,683
Customer relationships	3	900		(125)		775
Intangible assets, net		$	23,400	$	(1,870)	$	21,530

		December 31, 2021
	Estimated Useful Life (in years)	Gross Carrying amount		Accumulated Amortization		Net Book Value
Developed technology	8	$	15,900	$	(331)	$	15,569
Vendor relationship	3	6,600		(367)		6,233
Customer relationships	3	900		(50)		850
Intangible assets, net		$	23,400	$	(748)	$	22,652

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table summarizes estimated future amortization expense of finite-lived intangible assets-net (in thousands):

Years:	Amount
2022 (the remainder of 2022)	$	3,366
2023	4,488
2024	4,071
2025	1,988
2026	1,988
Thereafter	5,629
Total	$	21,530

Schedule of Accrued and Other Current Liabilities

Accrued and other current liabilities consist of the following (in thousands):

	March 31, 2022		December 31, 2021
Accrued compensation	$	3,487	$	3,229
Uninvoiced receipts	7,182		9,835
Other	1,120		1,109
Total accrued and other current liabilities	$	11,789	$	14,173