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Investments in Unconsolidated Entity - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2025
Feb. 29, 2024
Feb. 28, 2023
Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]        
Equity in earnings of unconsolidated subsidiaries $ (16,163) $ (15,407) $ (2,597)  
AIS Joint Venture        
Schedule of Equity Method Investments [Line Items]        
Ownership percentage of investment 40.00%     40.00%
Equity in earnings of unconsolidated subsidiaries $ (16,200) (15,400) $ (2,600)  
Investment in joint venture 99,379 $ 98,169    
Excess of equity method investment from carrying amount 10,200      
AIS Joint Venture | AZZ Infrastructure Solutions | Discontinued Operations, Disposed of by Sale        
Schedule of Equity Method Investments [Line Items]        
Investment in joint venture $ 99,400