Payment of consulting, licensing and other fees to related party.

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- Definition

Represents the additional amount of fees expense incurred with related parties.

+ References

No definition available.

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB
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-Section 45
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- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 1
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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

The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 20
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-Paragraph 1
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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Issuance of convertible loans			$ 35,010	$ 38,239
Proceeds from issuance of common shares in private placement			35,000
Investors [Member] \| Series A-3 Redeemable Convertible Preferred Shares [Member]
Related Party Transaction [Line Items]
Legal and consulting costs			200
Dr. Emmanuelle Charpentier [Member] \| TRACR Hematology Limited [Member]
Related Party Transaction [Line Items]
Payment of consulting, licensing and other fees			1,000	34
Related party transaction additional fees			500	1,000
Bayer Healthcare LLC [Member]
Related Party Transaction [Line Items]
Issuance of convertible loans			35,000
Bayer Healthcare LLC [Member] \| Casebia Therapeutics LLP [Member]
Related Party Transaction [Line Items]
Revenue related to research and development services			1,200	$ 0
Bayer Global Investments B.V [Member]
Related Party Transaction [Line Items]
Proceeds from issuance of common shares in private placement		$ 35,000	$ 35,000
Bayer Global Investments B.V [Member] \| Private Placement [Member]
Related Party Transaction [Line Items]
Purchase of common shares	2,500,000	2,500,000	2,500,000