Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2012

Prepaid Expense and Other Assets, Current [Abstract]

Summary of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following (in thousands):

	December 31,
	2012		2011
Founder’s receivable	$	—	$	5,267
Other receivables	6,317		305
Other	7,279		4,311
Total prepaid expenses and other current assets	$	13,596	$	9,883