Equity Incentive Plans - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($) shares	Sep. 30, 2017 USD ($) shares
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost \| $	$ 16.8	$ 16.8
Weighted-average remaining expected term		2 years 3 months 19 days
RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average remaining expected term		3 years 4 months 25 days
Unrecognized compensation cost \| $	$ 24.3	$ 24.3
2016 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future issuance	4,538,495	4,538,495
2016 Equity Incentive Plan \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Automatically increase percentage of shares of all classes of company’s common stock outstanding	5.00%	5.00%
2016 Equity Incentive Plan \| Class A Common Stock \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Automatically increase of shares reserved for issuance	5,500,000	5,500,000
2016 Employee Stock Purchase Plan \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Automatically increase percentage of shares of all classes of company’s common stock outstanding	1.00%	1.00%
2016 Employee Stock Purchase Plan \| Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future issuance	967,818	967,818
Purchase price of common stock, percent		85.00%
Number of shares purchased	0	165,559
2016 Employee Stock Purchase Plan \| Class A Common Stock \| IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Initial public offering date		Sep. 23, 2016
2016 Employee Stock Purchase Plan \| Class A Common Stock \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Automatically increase of shares reserved for issuance	1,600,000	1,600,000

Common stock capital shares reserved for future issuance annual automatic increase in shares.

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Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Date the subsidiary or equity investee issued or sold stock, in CCYY-MM-DD format.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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