Employee Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Employer's matching contribution as a percent of the first 3% of employee's salary contributed	100.00%
Percentage of employee's salary contributed matched 100% by employer	3.00%
Employer's matching contribution as a percent of the next 2% of employee's salary contributed	50.00%
Percentage of employee's salary contributed matched 50% by employer	2.00%
Employer's contribution cost	$ 4.1	$ 3.5	$ 2.6