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Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Payment for Contingent Consideration Liability, Investing Activities	$ 0
Sales	239,445	$ 249,921
Payments to Acquire Property, Plant, and Equipment	$ 12,879	$ 5,062
Effective Income Tax Rate Reconciliation, Percent	16.90%	22.50%
Aluminum Extrusions
Business Acquisition [Line Items]
Sales	$ 139,047	$ 128,235
Income Loss From Ongoing Operations	$ 12,085	$ 10,199

X

- Definition

Operating income for the period associated with the ongoing operations of the segment and excluding gains or losses associated with plant shutdowns, asset impairments and restructurings, gains or losses from the sale of assets and other items and goodwill impairment charges.

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Aggregrate revenue during the period from the sales of goods in the normal course of business, after deducting returns, allowances, discounts, and charges for outbound freight.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of cash outflow, made soon after acquisition date of business combination, to settle contingent consideration liability.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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