Goodwill and Specifically Identifiable Intangible Assets (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Goodwill and Specifically Identifiable Intangible Assets [Abstract]
Future sales volume and product mix used to forcast	10 years
Goodwill impairment

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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