Income Taxes (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
United States federal	$ 612	$ 683	$ 712
State and local	53	42	59
Foreign	367	368	(125)
Total current	1,032	1,093	646
Deferred:
United States federal	338	(3,643)	3
State and local	0	2	1
Foreign	832	(230)	126
Total deferred	1,170	(3,871)	130
Total income tax expense (benefit)	$ 2,202	$ (2,778)	$ 776