Aggregate additional revenue recognition milestone method revenue achieved.

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- Definition

Aggregate additional revenue recognition milestone method revenue eligible to receive.

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No definition available.

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- Definition

Aggregate number of gene targets.

+ References

No definition available.

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- Definition

Collaboration and license agreements number of products approved under agreement.

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No definition available.

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- Definition

Initial research term of agreement.

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- Definition

Milestone payments received.

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No definition available.

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- Definition

Number of additional gene targets.

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No definition available.

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- Definition

Number of gene targets.

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No definition available.

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- Definition

Number of initial gene targets.

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No definition available.

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- Definition

Number of research program.

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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
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-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)
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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 13
-Section A

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- Definition

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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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 aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-SubTopic 20
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
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-Subparagraph (SX 210.6-07.1(c))
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- Definition

The amount of consideration recognized during the period for the milestone or milestones.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 28
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=51671726&loc=SL6892177-166501

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Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

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Major Customers, Partnerships and Strategic Alliances - Additional Information (Detail)	1 Months Ended				3 Months Ended		12 Months Ended
	Jan. 31, 2016 USD ($)	Jan. 31, 2014 USD ($) Program	Jun. 30, 2012 Targets	Jan. 31, 2012 USD ($) Targets	Mar. 31, 2016 USD ($) Product Targets	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 01, 2015 USD ($)
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Number of research programs \| Program		2
Research and development					$ 15,266,000	$ 14,980,000
Biogen Inc [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Revenues under agreement		$ 20,000,000
Milestone payments received					$ 0
Number of products approved \| Product					0
Royalty revenues					$ 0
Deferred revenue					8,000,000
Biogen Inc [Member] \| Beta-thalassemia Project [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Research and development					2,000,000	1,400,000
Biogen Inc [Member] \| Other Projects [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Research and development					100,000	1,100,000
Biogen Inc [Member] \| Maximum [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Potential amount eligible to receive for certain milestones	$ 126,300,000
Potential amount to be funded for achievement of specified commercialized and sales milestones	$ 167,500,000
Shire AG [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Revenues under agreement				$ 13,000,000
Deferred revenue					4,000,000
Research and development					$ 400,000	$ 4,500,000
Aggregate number of gene targets \| Targets				7
Number of initial gene targets \| Targets				4
Number of gene targets \| Targets			5
Number of additional gene targets \| Targets			2		1
Recognition of milestone							$ 1,000,000
Amount of obligation related to reimbursement								$ 4,000,000
Revenue recognized related to prior obligations					$ 0
Research program to develop laboratory research reagents					6 years