Inventory (Notes)

9 Months Ended

Sep. 30, 2015

Inventories

Inventories consist of the following:



	September 30,		December 31,
	2015		2014
Raw materials	$	34,983	$	10,923
Work-in-process	110,616		73,519
Finished goods	12,513		10,768
Deferred costs	32,556		33,651
	$	190,668	$	128,861

Deferred costs represent the costs of product manufactured and shipped to the Company's collaborators for which recognition of revenue has been deferred. For the three months ended September 30, 2015 and 2014, cost of goods sold included inventory write-downs and reserves totaling $1.8 million and $1.6 million, respectively. For the nine months ended September 30, 2015 and 2014, cost of goods sold included inventory write-downs and reserves totaling $9.9 million and $3.5 million, respectively.