Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Payments - 2016 Stock Incentive Plan (Details)

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Stock-Based Payments - 2016 Stock Incentive Plan (Details) - shares
9 Months Ended
Jan. 01, 2017
Jun. 17, 2016
Sep. 30, 2017
Performance-based stock options | Maximum      
Stock-based payments      
Vesting period     6 years
2016 Plan      
Stock-based payments      
Increase in number of shares of common stock reserved for issuance of awards on the first day of each calendar year (in shares)   1,600,000  
Increase in number of shares of common stock reserved for issuance of awards on the first day of each calendar year, as a percentage of outstanding shares   4.00%  
Increase in number of shares of common stock reserved for issuance (in shares) 935,430    
Common stock available for future issuance (in shares)     3,086,970
2016 Plan | Stock options      
Stock-based payments      
Vesting period     4 years
Term of award     10 years
2016 Plan | Stock options | Vesting on one year anniversary of vesting commencement date      
Stock-based payments      
Vesting (as a percent)     25.00%
2016 Plan | Stock options | Vesting ratably on a monthly basis      
Stock-based payments      
Vesting period     3 years
Vesting (as a percent)     75.00%
2016 Plan | Performance-based stock options      
Stock-based payments      
Vesting period     6 years