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Earnings Per Share - Additional Information (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Reduction in earnings per share basic and diluted				$ 0.01
Anti-dilutive common stock equivalents excluded from calculation of diluted earnings per share	1,951,683	778,862	1,780,397	2,155,219
ASU 2016-09 [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Decrease in earnings per share basic and diluted			$ 0.01

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

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+ References

No definition available.

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- Definition

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+ References

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- Definition

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+ References

No definition available.

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