Nature Of Business And Summary Of Significant Accounting Policies (Economic Useful Lives Of Property, Plant And Equipment) (Details)	12 Months Ended
	Dec. 31, 2019
Buildings | Minimum
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	20 years
Buildings | Maximum
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	30 years
Machinery and equipment | Minimum
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	5 years
Machinery and equipment | Maximum
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	7 years
Office furniture and fixtures | Minimum
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	5 years
Office furniture and fixtures | Maximum
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	7 years