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Long-Term Debt And Lines of Credit (Tables)	9 Months Ended
	Sep. 30, 2021
Long-Term Debt And Lines Of Credit [Abstract]
Financial Debt Covenants	Description Requirement Leverage Ratio (Consolidated Indebtedness/Consolidated Adj. EBITDA) < 3.50 to 1.00 Fixed Charge Coverage Ratio (Consolidated Free Cash Flow/Consolidated Fixed Charges) > 1.50 to 1.00

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- Definition

Credit Agreement Covenants [Table Text Block]

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