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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - Restricted Stock Units [Member] - shares	Apr. 13, 2017	Apr. 11, 2017
Third-Party Consultant [Member]
Subsequent Event [Line Items]
Restricted share units, granted		10,000
Restricted shares units vested date		Apr. 18, 2017
Employees and Directors [Member]
Subsequent Event [Line Items]
Restricted share units, granted	1,907,000
Minimum [Member] | Employees and Directors [Member]
Subsequent Event [Line Items]
Award vesting period	1 year
Maximum [Member] | Employees and Directors [Member]
Subsequent Event [Line Items]
Award vesting period	4 years

X

- Definition

Share based compensation arrangement by share based payment award award vesting date.

+ References

No definition available.

+ Details

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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