Major Customers, Partnerships and Strategic Alliances (Tables)

9 Months Ended

Sep. 30, 2013

Sigma-Aldrich Corporation [Member]

Revenues recognized under the agreement with Sigma for the three and nine months ended September 30, 2013 and September 30, 2012, were as follows (in thousands):


	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Revenue related to Sigma Collaboration:
Royalty revenues	$	201	$	428	$	711	$	1,035
License fee and milestone revenues		101		—		1,351		1,000

Total	$	302	$	428	$	2,062	$	2,035

Shire AG [Member]

Revenues Recognized under Agreement

Revenues recognized under the agreement with Shire for the three and nine months ended September 30, 2013 and September 30, 2012, were as follows (in thousands):


	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Revenue related to Shire Collaboration:
Amortization of upfront fee	$	542	$	542	$	1,625	$	1,444
Research services		3,968		2,675		11,340		4,747

Total	$	4,510	$	3,217	$	12,965	$	6,191