Financial Statement Components (Tables)

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash and Cash Equivalents

Cash and cash equivalents consisted of the following (in thousands):

	December 31,
	2020		2019
Cash	$	10,652	$	5,676
Money market funds	64,971		2,260
U.S. Treasury	24,999		—
U.S. agency securities	—		1,398
Commercial paper	108,322		16,971
Corporate bonds	—		775
Total cash and cash equivalents	$	208,944	$	27,080

Schedule of Inventories

Inventories consisted of the following (in thousands):

	December 31,
	2020		2019
Raw materials	$	625	$	1,998
Work-in-process	52		1,376
Finished goods	2,936		628
Total inventories, net	$	3,613	$	4,002

Schedule of Prepaid Expenses and Other Current Assets

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

	December 31,
	2020		2019
Prepaid expenses	$	1,073	$	817
Advance payments to vendors	961		666
Prepaid rent and other	503		12
Other receivables	2,260		329
Total prepaid expenses and other current assets	$	4,797	$	1,824

Schedule of Property and Equipment

Property and equipment are stated at cost less accumulated depreciation and amortization, and is depreciated using the straight-line method over the estimated useful lives of the assets as follows:

Asset Category	Estimated useful lives
Computer hardware and software	3 to 5 years
Demonstration units and fleet	2 to 5 years
Machinery and equipment	5 to 7 years
Furniture and fixtures	7 years
Vehicles	5 years
Leasehold improvements	Shorter of useful life or lease term

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

	December 31,
	2020		2019
Computer hardware and software	$	2,450	$	2,992
Demonstration fleet and demonstration units	1,821		1,603
Machinery and equipment	5,940		5,321
Furniture and fixtures	293		325
Vehicles	835		902
Leasehold improvements	791		821
Construction in progress	1,410		465
Total property and equipment	13,540		12,429
Accumulated depreciation and amortization	(5,851)		(4,562)
Total property and equipment, net	$	7,689	$	7,867

Schedule of Property and Equipment Capitalized Under Capital Lease Obligations

Property and equipment capitalized under capital lease obligations consisted of the following (in thousands):

	December 31,
	2020		2019
Computer hardware and software	$	88	$	88
Machinery and equipment	838		491
Total property and equipment capitalized under capital lease obligations	926		579
Less: accumulated depreciation and amortization	(219)		(71)
Total	$	707	$	508

Schedule of Goodwill

The carrying amount of goodwill allocated to the Company’s reportable segments was as follows (in thousands):

	Autonomy Solutions		Other Component Sales		Total
As of December 31, 2020	$	687	$	14	$	701
As of December 31, 2019	$	687	$	14	$	701

Schedule of Other Noncurrent Assets

Other non-current assets consisted of the following (in thousands):

	December 31,
	2020		2019
Security deposits	$	1,106	$	1,793
Other non-current assets	45		36
Total other non-current assets	$	1,151	$	1,829

Schedule of Accrued and Other Current Liabilities

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

	December 31,
	2020		2019
Accrued expenses	$	3,998	$	2,049
Warranty liabilities	259		267
Contract liabilities	2,284		225
Accrued compensation and benefits	3,071		823
Contract losses	558		—
Capital lease liabilities and other, current	282		162
Total accrued and other current liabilities	$	10,452	$	3,526

Schedule of Other Non-Current Liabilities

Other non-current liabilities consisted of the following (in thousands): 

	December 31,
	2020		2019
Deferred rent	$	826	$	1,106
Capital lease liabilities, non-current	492		295
Total other non-current liabilities	$	1,318	$	1,401