Employee Benefit Plan - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Retirement Benefits [Abstract]
Contributions by employer	$ 0.4	$ 0.3	$ 0.8	$ 0.4