Discontinued Operations - Charges Related to the Businesses Sold, Assets Held for Sale and Assets Abandoned (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write down of assets held for sale to estimated sales price			$ 3,591
Write down of assets expected to be abandoned			6,923
Loss on sale of subsidiaries	$ 0	$ 640	3,080
Write down of excess inventory			2,511
Restructuring and impairment charges	$ 0	$ 0	16,105
Operating Segments \| Metal Coatings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write down of assets held for sale to estimated sales price			2,652
Write down of assets expected to be abandoned			6,923
Loss on sale of subsidiaries			1,221
Write down of excess inventory			2,511
Restructuring and impairment charges			13,307
Operating Segments \| Infrastructure Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write down of assets held for sale to estimated sales price			939
Write down of assets expected to be abandoned			0
Loss on sale of subsidiaries			1,859
Write down of excess inventory			0
Restructuring and impairment charges			$ 2,798

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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