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Acquisitions (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended
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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

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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