Leasehold Improvements and Equipment (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment, Net	$ 5,213	$ 5,851
Asset not yet in service [Member]
Property, Plant and Equipment, Net	$ 1,832	$ 1,824

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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