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INVESTMENTS IN SECURITIES AND DERIVATIVE INSTRUMENTS - Narratives (Details) - USD ($)
2 Months Ended 12 Months Ended
Mar. 30, 2023
Feb. 24, 2022
Mar. 31, 2023
Mar. 31, 2022
Jan. 07, 2022
Aug. 31, 2021
Derivatives, Fair Value            
Long-term debt gross     $ 125,914,000 $ 136,932,000    
Derivative loss   $ 100,000        
Repayments of long-term debt     27,850,000 3,813,000    
Unrealized gain of interest rate swaps, net of tax     998,000 929,000    
Gross loss from derivative instrument     300,000 0    
Gross gain from derivative instrument       0    
Gain from equity investments     500,000 2,400,000    
Loss from equity investments     900,000 2,800,000    
Margin account outstanding     100,000 0    
Cash margin balance     200,000 $ 0    
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]       (Loss) Income before income taxes    
Fair Value, Inputs, Level 2            
Derivatives, Fair Value            
Derivative asset     2,420,000 $ 889,000    
Unsecured Debt | Contrail Debt            
Derivatives, Fair Value            
Interest rate stated percentage (as a percentage)         4.68%  
Long-term debt gross     $ 50,621,000 57,459,000 $ 43,600,000  
Repayments of long-term debt $ 6,700,000          
Margin Account Borrowings            
Derivatives, Fair Value            
Debt instrument, interest rate borrowings (as a percentage)     6.33%      
Interest Rate Swap            
Derivatives, Fair Value            
Unrealized gain of interest rate swaps, net of tax     $ 1,000,000 900,000    
Interest Rate Swap | Fair Value, Inputs, Level 2            
Derivatives, Fair Value            
Derivative asset     2,400,000 900,000    
Parent Company | Unsecured Debt            
Derivatives, Fair Value            
Long-term debt gross     $ 47,963,000 51,813,000    
Term Note A - MBT | Parent Company | Unsecured Debt            
Derivatives, Fair Value            
Interest rate stated percentage (as a percentage)     3.42%     3.42%
Long-term debt gross     $ 7,762,000 8,542,000    
Term Note A - MBT | Parent Company | Interest Rate Swap | Unsecured Debt            
Derivatives, Fair Value            
Interest rate stated percentage (as a percentage)     4.56%      
Term Note D - MBT | Parent Company | Unsecured Debt            
Derivatives, Fair Value            
Long-term debt gross     $ 1,338,000 $ 1,405,000    
Term Note D - MBT | Parent Company | Interest Rate Swap | Unsecured Debt            
Derivatives, Fair Value            
Interest rate stated percentage (as a percentage)     5.09%