Goodwill And Intangible Assets (Changes In The Carrying Value Of Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Gross carrying value, Beginning	$ 12,958
Currency translation	157
Gross carrying value, Ending	13,115
Accumulated impairment losses, Beginning	(3,375)
Accumulated impairment losses, Ending	(3,375)
Net carrying value	9,740	$ 9,583
Canada [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	7,142
Currency translation	5
Gross carrying value, Ending	7,147
Accumulated impairment losses, Beginning	(3,375)
Accumulated impairment losses, Ending	(3,375)
Net carrying value	3,772	3,767
Poland [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	5,816
Currency translation	152
Gross carrying value, Ending	5,968
Accumulated impairment losses, Beginning
Accumulated impairment losses, Ending
Net carrying value	$ 5,968	$ 5,816