Other Comprehensive Income (Loss) (Schedule of Accumulated Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance at the beginning of period	$ (1,102)	$ (1,406)
Other comprehensive loss for the period	(408)	304
Balance at the end of period	(1,510)	(1,102)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance at the beginning of period	(1,285)	(1,475)
Other comprehensive loss for the period	(193)	190
Balance at the end of period	(1,478)	(1,285)
Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance at the beginning of period	183	69
Other comprehensive loss for the period	(215)	114
Balance at the end of period	$ (32)	$ 183