Revenue earned during the period arising from products sold or services provided under the terms of a contract, not elsewhere specified in the taxonomy. May include government contracts, construction contracts, and any other contract related to a particular project or product.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Name:	us-gaap_ContractsRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent event (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
Subsequent event (Details) - USD ($) $ in Thousands	Oct. 31, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Subsequent events
Contract revenues		$ 8,214	$ 88,214	$ 39,643	$ 101,643
Novartis
Subsequent events
Contract revenues		$ 5,000	$ 85,000	$ 30,000	$ 92,000
Subsequent Event \| Novartis
Subsequent events
Contract revenues	$ 15,000