Stock-based Payments and Director Fees - Restricted Stock Plan Expenses (Details) - Restricted stock - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expenses for plan grants	$ 250	$ 231
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expenses for plan grants	25	24
Employee and Service Provider
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expenses for plan grants	$ 225	$ 207