Goodwill And Intangible Assets (Changes In The Carrying Value Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Gross carrying value, Beginning	$ 33,508	$ 34,062
Currency translation	(764)	(554)
Gross carrying value, Ending	32,744	33,508
Accumulated impairment losses, Beginning	(23,161)	(23,161)
Accumulated impairment losses, Ending	(23,161)	(23,161)
Net carrying value	9,583	10,347
United States [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	19,786	19,786
Gross carrying value, Ending	19,786	19,786
Accumulated impairment losses, Beginning	(19,786)	(19,786)
Accumulated impairment losses, Ending	(19,786)	(19,786)
Canada [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	7,402	7,385
Currency translation	(260)	17
Gross carrying value, Ending	7,142	7,402
Accumulated impairment losses, Beginning	(3,375)	(3,375)
Accumulated impairment losses, Ending	(3,375)	(3,375)
Net carrying value	3,767	4,027
Poland [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	6,320	6,891
Currency translation	(504)	(571)
Gross carrying value, Ending	5,816	6,320
Accumulated impairment losses, Beginning
Accumulated impairment losses, Ending
Net carrying value	$ 5,816	$ 6,320