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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Sale Leaseback Transaction [Line Items]
Advertising costs	$ 7.2	$ 5.7	$ 5.0
Minimum | Land, Buildings and Improvements
Sale Leaseback Transaction [Line Items]
Estimated useful lives	15 years
Minimum | Machinery and Equipment
Sale Leaseback Transaction [Line Items]
Estimated useful lives	3 years
Maximum | Land, Buildings and Improvements
Sale Leaseback Transaction [Line Items]
Estimated useful lives	40 years
Maximum | Machinery and Equipment
Sale Leaseback Transaction [Line Items]
Estimated useful lives	20 years
Residential Products | Home Improvement Retail Company | Accounts Receivable
Sale Leaseback Transaction [Line Items]
Concentrations of credit risk	11.00%	15.00%
Residential Products | Home Improvement Retail Company | Net sales
Sale Leaseback Transaction [Line Items]
Concentrations of credit risk	14.00%	14.00%	14.00%

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

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-Publisher FASB
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-Section 50
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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