Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Nov. 30, 2022	Nov. 30, 2022	Nov. 30, 2021	May 13, 2022	Feb. 28, 2022
Assets
Goodwill	$ 710,246	$ 710,246			$ 190,391
Liabilities
Depreciation and amortization	$ 300	$ 55,813	$ 28,033
Precoat Metals Business Division
Assets
Accounts receivable				$ 77,422
Inventories				43,369
Contract assets				70,731
Prepaid and other assets				2,245
Property, plant and equipment				306,953
Right-of-use asset				10,954
Goodwill				532,391
Intangibles and other assets				446,746
Total fair value of assets acquired				1,490,813
Liabilities
Accounts payable				(99,223)
Accrued expenses				(32,062)
Other accrued liabilities				(3,741)
Customer deposits				(1,574)
Lease liability, short-term				(1,706)
Lease liability, long-term				(9,248)
Deferred tax liabilities				(3,100)
Other long-term liabilities				(56,711)
Total fair value of liabilities assumed				(207,365)
Total Purchase Price, net of cash acquired				$ 1,283,448
DAAM Galvanizing Co. Ltd.
Assets
Accounts receivable					3,253
Inventories					2,451
Property, plant and equipment					11,462
Goodwill					13,691
Intangibles and other assets					9,975
Liabilities
Deferred tax liabilities					(1,422)
Accounts payable and other accrued liabilities					(3,910)
Total Purchase Price, net of cash acquired					$ 35,500