Related-Party Transactions (Tables)

12 Months Ended

Dec. 31, 2014

Related Party Transactions [Abstract]

Revenues from GSK

The Company recognized the following revenues from GSK during the years ended December 31, 2014, 2013, and 2012 (in thousands):

	2014		2013		2012
Contract revenue	$	—	$	2,299	$	1,017
Recognition of up-front payments		—		3,761		4,402
Total revenues	$	—	$	6,060	$	5,419