Impairment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Impaired Long-Lived Assets Held and Used [Line Items]
Goodwill, Impairment Loss	$ 0	$ (13,696)
Goodwill, Impairment Loss, Net of Tax		10,500
Aluminum Extrusions [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Goodwill, Impairment Loss	$ 0	$ 13,696

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration