Quarterly report pursuant to Section 13 or 15(d)

Employee Stock Purchase Plan and Stock-Based Compensation - Summary of Restricted Stock Activity (Details)

v3.10.0.1
Employee Stock Purchase Plan and Stock-Based Compensation - Summary of Restricted Stock Activity (Details) - 2004 and 2018 Equity Incentive Plan - Restricted Stock
9 Months Ended
Sep. 30, 2018
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Balance as of December 31, 2017 2,374
Vested (2,374)
Balance as of September 30, 2018 0