Goodwill And Intangible Assets (Changes In The Carrying Value Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Gross carrying value, Beginning	$ 34,062	$ 32,936
Acquisition		1,157
Currency translation	(554)	(31)
Gross carrying value, Ending	33,508	34,062
Accumulated impairment losses, Beginning	(23,161)
Impairment		(23,161)
Accumulated impairment losses, Ending	(23,161)	(23,161)
Net carrying value	10,347	10,901
United States [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	19,786	18,629
Acquisition		1,157
Currency translation
Gross carrying value, Ending	19,786	19,786
Accumulated impairment losses, Beginning	(19,786)
Impairment		(19,786)
Accumulated impairment losses, Ending	(19,786)	(19,786)
Net carrying value
Canada [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	7,385	7,550
Acquisition
Currency translation	17	(165)
Gross carrying value, Ending	7,402	7,385
Accumulated impairment losses, Beginning	(3,375)
Impairment		(3,375)
Accumulated impairment losses, Ending	(3,375)	(3,375)
Net carrying value	4,027	4,010
Poland [Member]
Goodwill [Line Items]
Gross carrying value, Beginning	6,891	6,757
Acquisition
Currency translation	(571)	134
Gross carrying value, Ending	6,320	6,891
Accumulated impairment losses, Beginning
Impairment
Accumulated impairment losses, Ending
Net carrying value	$ 6,320	$ 6,891

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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