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Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Feb. 28, 2022	Jan. 31, 2022	Feb. 28, 2021	Feb. 29, 2020
Purchase Price Allocation
Goodwill	$ 385,613		$ 353,881	$ 356,225
DAAM Galvanizing Co. Ltd.
Purchase Price Allocation
Accounts receivable	2,576
Inventories	2,308
Property, plant and equipment	14,436
Goodwill	24,498
Accounts payable and other accrued liabilities	(4,003)
Deferred income taxes	(3,596)
Total purchase price	$ 36,219
Steel Creek Galvanizing Company, LLC
Purchase Price Allocation
Accounts receivable		$ 598
Inventories		3,593
Property, plant and equipment		15,796
Intangibles		872
Goodwill		7,732
Accounts payable and other accrued liabilities		(765)
Contingent consideration		(2,826)
Total purchase price		$ 25,000
2020 Acquisitions
Purchase Price Allocation
Accounts receivable				4,591
Inventories				1,830
Prepaid expenses and other				22
Property, plant and equipment				5,336
Intangibles				15,512
Goodwill				39,419
Accounts payable and other accrued liabilities				(1,575)
Contingent consideration				(2,000)
Deferred income taxes				(2,507)
Total purchase price				$ 60,628