Stock Plans and Stock-Based Compensation - Schedule of Stock Option Activity (Details) - $ / shares	9 Months Ended	12 Months Ended
Sep. 30, 2016	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock options outstanding, Beginning Balance	1,821,722	699,662
Stock options outstanding, Granted	241,590	1,190,317
Stock options outstanding, Exercised	(161,336)	(37,559)
Stock options outstanding, Forfeited/canceled	(55,123)	(30,698)
Stock options outstanding, Ending Balance	1,846,853	1,821,722
Weighted average exercise price, Beginning Balance	$ 8.68	$ 2.24
Weighted average exercise price, Granted	14.66	12.19
Weighted average exercise price, Exercised	4.34	1.32
Weighted average exercise price, Forfeited/canceled	8.29	7.76
Weighted average exercise price, Ending Balance	$ 9.89	$ 8.68

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option 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)(1)(iv)(3)
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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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