Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]
Annual vesting percentage	20.00%
Employer matching contribution, percentage	50.00%
Employer matching contribution, percent of employee's pay	5.00%
401(k) benefit plan expense	$ 0.6	$ 0.6	$ 0.5
Bonus expense	1.9	2.1	$ 1.8
Accrued bonuses	$ 2.5	$ 1.7
20 percent vested
Defined Contribution Plan Disclosure [Line Items]
Vesting period	2 years
Fully vested
Defined Contribution Plan Disclosure [Line Items]
Vesting period	6 years