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Investments in Unconsolidated Entity - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 31, 2023
USD ($)
Aug. 31, 2022
USD ($)
Aug. 31, 2023
USD ($)
Aug. 31, 2022
USD ($)
Feb. 28, 2023
USD ($)
Sep. 30, 2022
USD ($)
Schedule of Equity Method Investments [Line Items]            
Period of amortization (in years) 7 years   7 years      
Equity in (earnings) loss of unconsolidated subsidiaries $ (974) $ 0 $ (2,394) $ 0    
AIS Joint Venture            
Schedule of Equity Method Investments [Line Items]            
Ownership percentage of investment           40.00%
Investment in joint venture 85,535   85,535   $ 84,760  
Excess of equity method investment from carrying amount 7,400   7,400      
AIS Joint Venture | AZZ Infrastructure Solutions            
Schedule of Equity Method Investments [Line Items]            
Equity in (earnings) loss of unconsolidated subsidiaries     $ (2,400)      
Amortization amount $ (2,700)          
AIS Joint Venture | AZZ Infrastructure Solutions | Discontinued Operations, Disposed of by Sale            
Schedule of Equity Method Investments [Line Items]            
Percentage of investment sold           0.60
Investment in joint venture           $ 85,500