- Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General and administrative	$ 3,734	$ 619	$ 1,981
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General and administrative	182	61	6
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General and administrative	478	289	292
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General and administrative	2,533	609	1,527
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General and administrative	383	(410)	52
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General and administrative	$ 158	$ 70	$ 104