Balance Sheets Details (Tables)

6 Months Ended

Jun. 30, 2015

Inventories consisted of the following (in thousands):



	June 30, 2015		December 31, 2014
Raw materials	$	182	$	84
Work-in-process	122		65
Finished goods	664		1,246
Inventories	$	968	$	1,395

Schedule of property and equipment, net

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



	June 30, 2015			December 31, 2014
Laboratory equipment	$	21,281		$	23,002
Leasehold improvements	9,782			9,773
Computer equipment	3,271			3,262
Office furniture and equipment	1,227			1,227
Construction in progress (1)	70			24
Property and equipment	35,631			37,288
Less: accumulated depreciation and amortization	(32,476		)	(31,452		)
Less: impairment of laboratory equipment (2)	—			(1,841		)
Property and equipment, net	$	3,155		$	3,995

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

(2) We recorded an impairment charge of $1.8 million in the second quarter of 2014, reducing the carrying value of certain laboratory equipment related to our Codexol program to zero. The impairment charge was reflected within research and development expenses on the condensed consolidated statements of operations.

Schedule of Finite-Lived Intangible Assets

Intangible assets, net consisted of the following (in thousands, except weighted average amortization period):



	June 30, 2015							December 31, 2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted- Average Amortization Period
															(years)
Maxygen intellectual property	$	20,244	$	(15,745	)	$	4,499	$	20,244	$	(14,058	)	$	6,186	6

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The estimated future amortization expense to be charged to research and development through the year ending December 31, 2016 is as follows (in thousands):



Year ending December 31:	Total
2015 (remaining 6 months)	$	1,687
2016	2,812
	$	4,499