Subsequent Events - Additional Information (Detail) - Subsequent Events [Member]	Aug. 02, 2017 shares
Non-Qualified Stock Options [Member]
Subsequent Event [Line Items]
Stock-based awards granted to purchase common stock	253,902
Non-Qualified Stock Options [Member] \| Common Stock Price Target Achievements Conditions, Vesting Four Year Period [Member]
Subsequent Event [Line Items]
Stock-based awards granted to purchase common stock	131,578
Stock-based award vesting period	4 years
Non-Qualified Stock Options [Member] \| Common Stock Price Target Achievements Conditions, Vesting Five Year Period [Member]
Subsequent Event [Line Items]
Stock-based awards granted to purchase common stock	122,324
Stock-based award vesting period	5 years
Restricted Stock Units [Member] \| Chief Executive Officer [Member]
Subsequent Event [Line Items]
Stock-based awards granted	78,125

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.

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=96867065&loc=d3e5070-113901

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Number of share instruments newly issued under a share-based compensation 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
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- 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.

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