Summary of Significant Accounting Policies - Disaggregated Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Disaggregation of Revenue [Line Items]
Sales	$ 902,664	$ 838,917	$ 1,061,817
Industrial
Disaggregation of Revenue [Line Items]
Sales	559,653	511,740	605,236
Transmission and distribution
Disaggregation of Revenue [Line Items]
Sales	189,559	209,729	254,836
Power generation
Disaggregation of Revenue [Line Items]
Sales	$ 153,452	$ 117,448	$ 201,745

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details