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Acquisitions (Details Textual) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Feb. 28, 2022	Jan. 31, 2022	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020	Apr. 30, 2019
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ 61,219	$ 4,419	$ 60,628
Acquisition related costs			2,000		800
K2 [Member]
Business Acquisition [Line Items]
Business Combination, Maximum Contingent Consideration, Liability						$ 2,000
2020 Acquisitions
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			27,900
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			$ 2,600
Contingent consideration					$ (2,000)
Acme Galvanizing, Inc
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Environmental Remediation				$ 600
DAAM Galvanizing Co. Ltd.
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 36,200
Steel Creek Galvanizing Company, LLC
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		$ 25,000
Contingent consideration		$ (2,826)

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Name Accounting Standards Codification
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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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