Balance Sheets Details

Inventories, net

Inventories consisted of the following (in thousands):



	September 30, 2018			December 31, 2017
Raw materials	$	159		$	215
Work-in-process	79			53
Finished goods	2,035			2,147
Less: reserve	(1,443		)	(1,379		)
Inventories, net	$	830		$	1,036

Property and Equipment, net

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



	September 30, 2018			December 31, 2017
Laboratory equipment ⁽¹⁾	$	21,184		$	19,777
Leasehold improvements	10,359			10,327
Computer equipment and software	3,901			3,695
Office equipment and furniture	1,195			1,185
Construction in progress ⁽²⁾	663			85
Property and equipment	37,302			35,069
Less: accumulated depreciation	(32,771		)	(32,254		)
Property and equipment, net	$	4,531		$	2,815

⁽¹⁾ Fully depreciated laboratory equipment with a cost of $0.3 million and $0.2 million was retired during nine months ended September 30, 2018 and the fiscal year ended December 31, 2017, respectively.

⁽²⁾ Construction in progress includes equipment received but not yet placed into service pending installation.

Goodwill

Goodwill had a carrying value of approximately $3.2 million at September 30, 2018 and December 31, 2017.

Other Accrued Liabilities

Other accrued liabilities consisted of the following (in thousands):



	September 30, 2018		December 31, 2017
Accrued purchases ⁽¹⁾	$	688	$	941
Accrued professional and outside service fees	2,229		2,393
Accrued expenses - cost of sales over time recognition	1,761		—
Deferred rent	318		258
Lease incentive obligation	425		425
Other	512		345
Total	$	5,933	$	4,362

⁽¹⁾ Amount represents products and services received but not billed as of September 30, 2018 and December 31, 2017.