Collaboration and License Agreements (Tables)

9 Months Ended

Sep. 30, 2014

Revenue Recognition [Abstract]

Summary of Revenue from Collaboration and License Agreements

We have recognized revenue from our collaboration and license agreements as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Bayer and Janssen	$	676	$	1,028	$	2,782	$	3,466
BMS and Pfizer		164		772		1,109		3,865
Daiichi Sankyo		1,523		888		3,133		1,013
Lee's Pharmaceutical		64		78		189		130
Total collaboration and license revenue	$	2,427	$	2,766	$	7,213	$	8,474