Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan - Additional Information (Details)

v3.10.0.1
Employee Benefit Plan - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Compensation And Retirement Disclosure [Abstract]      
Percentage of matching contribution of each participants 100.00%    
Maximum contribution percentage of participating employees 6.00%    
Year of service on which employer's matching contribution under 401K plan will be 100% vested 5 years    
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage 20.00%    
Company's contribution to 401K plan $ 2.0 $ 1.4 $ 0.4