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Restructuring and Impairment Charges - Metal Coatings Segment Closing Of Certain Locations (Details)
$ in Thousands
6 Months Ended
Aug. 31, 2020
USD ($)
Restructuring Cost and Reserve [Line Items]  
Write down of excess inventory $ 2,511
Write down on assets held for sale to estimated sales price 7,261
Metal Coatings  
Restructuring Cost and Reserve [Line Items]  
Write down of excess inventory 336
Write down on assets held for sale to estimated sales price 2,999
Intangible impairment 3,258
Other 372
Asset impairment charges $ 6,965