Inventory (Tables)

12 Months Ended

Dec. 31, 2012

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories, which were included in prepaid expenses and other current assets in the Company's balance sheets, consist of the following:

	As of December 31,
	2012		2011
Raw materials	$	4,862	$	4,666
Work in process	14,656		8,846
Finished goods	2,570		1,142
Deferred costs	6,550		1,960
	$	28,638	$	16,614