Income Taxes (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current:
United States federal	$ 202	$ 214
State and local	20	39
Foreign	530	451
Total current	752	704
Deferred:
United States federal	(495)	(54)
Foreign	(202)	52
Total deferred	(697)	(2)
Total income tax expense (benefit)	$ 55	$ 702