Defined Contribution Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan
Company's matching contributions equal to each employee's contribution (as a percent)	50.00%
Maximum contribution of employees as a percentage of their compensation	6.00%
Amount expensed	$ 0.3	$ 0.3