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Inventory

3 Months Ended

Mar. 31, 2014

Inventories

Inventories consist of the following:



	March 31,		December 31,
	2014		2013
Raw materials	$	6,792	$	9,120
Work-in-process	47,858		35,868
Finished goods	13,230		14,352
Deferred costs	18,665		11,014
	$	86,545	$	70,354

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 March 31, 2014 and 2013, cost of goods sold included inventory write-downs and reserves totaling $1.1 million and $3.2 million, respectively.

- Definition

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

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