Balance Sheets Details

Inventories

Inventories consisted of the following (in thousands):



	March 31, 2019		December 31, 2018
Raw materials	$	58	$	165
Work-in-process	158		47
Finished goods	417		377
Inventories	$	633	$	589

Property and Equipment, net

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



	March 31, 2019			December 31, 2018
Laboratory equipment ⁽¹⁾	$	21,464		$	21,328
Leasehold improvements	10,730			10,359
Computer equipment and software	3,663			3,954
Office equipment and furniture	1,442			1,272
Construction in progress ⁽²⁾	175			939
Property and equipment	37,474			37,852
Less: accumulated depreciation and amortization	(32,939		)	(33,093		)
Property and equipment, net	$	4,535		$	4,759

⁽¹⁾ Fully depreciated laboratory equipment with a cost of $0.1 million and $0.3 million was retired during three months ended March 31, 2019 and the fiscal year ended December 31, 2018, 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 March 31, 2019 and December 31, 2018.

Other Accrued Liabilities

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



	March 31, 2019		December 31, 2018
Accrued purchases	$	3,556	$	1,492
Accrued professional and outside service fees	3,318		2,020
Deferred rent	—		343
Lease incentive obligation	—		425
Other	253		575
Total	$	7,127	$	4,855