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STOCK-BASED COMPENSATION - Restricted Stock Units Narrative (Details) - shares
shares in Thousands
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Minimum | ZMC | 2017 Management Agreement    
Stock-based compensation    
Share Based Compensation Arrangement By Share Based Payment Award, Award Measurement Period 2 years  
Maximum | ZMC | 2017 Management Agreement    
Stock-based compensation    
Share Based Compensation Arrangement By Share Based Payment Award, Award Measurement Period 3 years  
Total Performance-based | ZMC | 2017 Management Agreement    
Stock-based compensation    
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments other than Option Percentage of Grants Tied to Performance Measure As Defined In Agreement 50.00%  
Market Based Restricted Stock | ZMC | 2017 Management Agreement    
Stock-based compensation    
Vesting percentage 50.00%  
Market Based Restricted Stock | Maximum | 2017 Management Agreement    
Stock-based compensation    
Vesting percentage 75.00%  
Restricted Stock    
Stock-based compensation    
Award vesting period 3 years  
Restricted Stock | 2017 Management Agreement    
Stock-based compensation    
Nonvested shares (in shares) 1,100 400
Vested (in shares) 200  
Forfeited (in shares) 100