Geographic Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Geographic Information
Revenue	$ 614	$ 799
Identifiable long-lived assets	890	921
U.S.
Geographic Information
Identifiable long-lived assets	821	866
Canada
Geographic Information
Identifiable long-lived assets	69	55
Reportable Geographical Components
Geographic Information
Revenue	614	799
Reportable Geographical Components | U.S.
Geographic Information
Revenue	575	646
Reportable Geographical Components | Canada
Geographic Information
Revenue	$ 39	$ 153