Balance Sheet Components

3 Months Ended

Mar. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Components

2. Balance Sheet Components

Inventory

Inventory consists of the following (in thousands):

	March 31,		December 31,
	2019		2018
Work in process	$	1,369	$	961
Finished goods		1,390		1,246
Total inventory	$	2,759	$	2,207

Property and Equipment - Net

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

	March 31,			December 31,
	2019			2018
Computer equipment and software	$	1,220		$	1,173
Leasehold improvements		84			84
Furniture		30			30
Total property and equipment		1,334			1,287
Less: accumulated depreciation		(764	)		(676	)
Total property and equipment - net	$	570		$	611

The Company recorded $0.1 million and $0.1 million of depreciation expense for the three months ended March 31, 2019 and 2018, respectively.

Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	March 31,		December 31,
	2019		2018
Payroll-related expenses	$	437	$	398
Engineering services		221		134
Professional fees		95		48
Accrued warranty		77		73
Taxes payable		35		28
Other		25		37
Total accrued liabilities	$	890	$	718

Customer Deposits

Customer deposits represent payments received in advance of shipments and fluctuate depending on timing of customer pre-payments and product shipment. Customer deposits were $0.2 million and $2,000 as of March 31, 2019 and December 31, 2018, respectively. The Company generally expects to recognize revenue from customer deposits during the three month interim period immediately following the balance sheet date. During the three months ended March 31, 2019, the Company recognized $2,000 of revenue from the December 31, 2018 customer deposits balance.