Balance Sheet Components

6 Months Ended

Jun. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

5. Balance Sheet Components

Inventory

Inventory and PCBAs consisted of the following (in thousands):

	June 30, 2018		December 31, 2017
Raw materials	$	1,143	$	1,103
Finished goods		3,645		3,830
Total	$	4,788	$	4,933

Classified as:
Inventory	$	2,168	$	1,683
Other assets		2,620		3,250
Total	$	4,788	$	4,933

Amounts reported as other assets are comprised of the PCBA costs that are included in both raw materials and finished goods totals above.

Property and Equipment, Net

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

	June 30,			December 31,
	2018			2017
Laboratory and manufacturing equipment	$	2,343		$	1,994
Computer equipment and software		1,047			1,015
Furniture and fixtures		953			953
Leasehold improvements		726			726
Internal-use software		6,660			4,598
Total property and equipment, gross	$	11,729			9,286
Less: accumulated depreciation and amortization		(4,169	)		(3,065	)
Total property and equipment, net	$	7,560		$	6,221

Depreciation and amortization expense was $0.6 million and $1.1 million for the three and six months ended June 30 2018, respectively, and $0.3 million and $0.6 million for the three and six months ended June 30, 2017, respectively.

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	June 30,		December 31,
	2018		2017
Accrued vacation	$	2,565	$	2,081
Accrued payroll and related expenses		8,686		9,361
Accrued professional services fees		883		1,041
Claims payable		2,123		1,375
Other		2,098		1,786
Total accrued liabilities	$	16,355	$	15,644