Balance Sheet Components

12 Months Ended

Dec. 31, 2016

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Balance Sheet Components

7. BALANCE SHEET COMPONENTS

Inventory

Inventory consisted of the following (in thousands):

	December 31,
	2016		2015
Finished goods	$	4,199	$	237
Work in progress		159		—
Raw materials		1,103		529
Total inventory	$	5,461	$	766

Property and Equipment, Net

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

	December 31,
	2016			2015
Laboratory equipment	$	5,065		$	5,022
Leasehold improvements		5,111			4,326
Furniture and fixtures		825			825
Computer and office equipment		4,661			4,125
Machinery and equipment		1,424		—
	$	17,086		$	14,298
Less: Accumulated depreciation and amortization		(14,155	)		(11,873	)
Property and equipment, net	$	2,931		$	2,425

Depreciation and amortization expense was $1.2 million, $0.8 million and $0.5 million for the years ended December 31, 2016, 2015 and 2014, respectively.

Assets purchased under capital leases, included above in laboratory equipment, computer and office equipment, were $2.5 million and $1.7 million at December 31, 2016 and 2015, respectively. Accumulated amortization was $2.3 million and $1.5 million at December 31, 2016 and 2015, respectively. Related amortization expense, included in depreciation and amortization expense, was $204,000, $79,000 and $59,000 for the years ended December 31, 2016, 2015 and 2014, respectively.

Accrued and Other Liabilities

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

	December 31,
	2016		2015
Clinical studies	$	1,375	$	756
Accrued interest payable on debt		862		—
Professional fees		620		880
Debt financing fees		600		—
Test sample processing fees		524		426
Accrued overpayments and refunds		281		163
Software implementation costs		176		—
Deferred rent – current portion		374		258
Capital leases – current portion		68		71
Other accrued expenses		440		338
Total accrued and other liabilities	$	5,320	$	2,892