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Stock Plans and Stock-Based Compensation - Additional Information (Details) - shares
9 Months Ended
Sep. 30, 2016
Sep. 15, 2016
2016 Equity Incentive Plan [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares reserved for issuance   3,893,118
Automatic increase percentage   3.00%
2016 Equity Incentive Plan [Member] | Tranche One [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares reserved for issuance   2,000,000
2008 Equity Incentive Plan [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Stock options vesting period 4 years  
Stock options expiration period 10 years  
2008 Equity Incentive Plan [Member] | Tranche Two [Member] | Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares reserved for issuance   42,934
2008 Equity Incentive Plan [Member] | Tranche Three [Member] | Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares reserved for issuance   1,850,184