Restructuring (Schedule of Restructuring Liability) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring charges accrued	$ 282,000	$ 106,000	$ 1,331,000
Ending balance	0
Employee Severance
Restructuring Reserve [Roll Forward]
Beginning balance	0	1,045,000
Restructuring charges accrued	282,000	106,000
Payments	(285,000)	(1,079,000)
Currency translation/other	3,000	(72,000)
Ending balance	$ 0	$ 0	$ 1,045,000