Sales Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
May 31, 2021	May 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 229,826	$ 213,293
Industrial
Disaggregation of Revenue [Line Items]
Revenues	153,983	130,109
Transmission and distribution
Disaggregation of Revenue [Line Items]
Revenues	43,667	49,057
Power generation
Disaggregation of Revenue [Line Items]
Revenues	$ 32,176	$ 34,127

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.

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+ Details