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Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2014	Dec. 31, 2016
Revenue
Deferred revenue	$ 3,729		$ 3,729			$ 3,749
Product development and licensing agreements revenue	694	$ 604	1,250	$ 1,057
Contracts and grants revenue	3,135	785	4,113	1,635
BMS
Revenue
Deferred revenue					$ 5,000
Term of the agreement					5 years
Reimbursement of external costs incurred by the company (as a percent)					50.00%
Product development and licensing agreements revenue	700	600	1,200	1,000
Rockefeller
Revenue
Contracts and grants revenue	300	$ 400	1,100	$ 800
IAVI
Revenue
Contracts and grants revenue	$ 2,300		$ 2,300

X

- Definition

Represents the term of the collaborative arrangement.

+ References

No definition available.

+ Details

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X

- Definition

Represents percentage of reimbursement of external costs incurred by the company.

+ References

No definition available.

+ Details

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X

- Definition

This element represents revenue earned during the period arising from products sold or services provided under the terms of a contract. Also include revenue earned during the period from non-repayable sum of money awarded to an entity to carry out a specific purpose as provided in grant agreements.

+ References

No definition available.

+ Details

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X

- Definition

This element represents revenue from product development and licensing agreements.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 13.A.3)
-URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 13.A.4(a).Q1)
-URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780

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- Details

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X

- Details

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