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CREDIT FACILITY AND NOTES PAYABLE (Details)
$ in Millions
6 Months Ended
Sep. 30, 2021
USD ($)
Component
Oct. 13, 2021
USD ($)
Mar. 31, 2021
USD ($)
Credit Facility [Abstract]      
Maximum borrowing capacity under credit facility $ 350.0    
Notes Payable [Member] | Recourse [Member]      
Notes Payable [Abstract]      
Long-term Debt $ 44.9    
Weighted average interest rate of notes 3.50%   3.50%
Notes Payable [Member] | Recourse [Member] | Note Payable One Installment Arrangement [Member]      
Notes Payable [Abstract]      
Long-term Debt $ 15.9    
Notes Payable [Member] | Non-recourse [Member]      
Notes Payable [Abstract]      
Long-term Debt $ 25.4   $ 56.1
Weighted average interest rate of notes 3.59%   3.35%
2021 Credit Facility [Member] | Subsequent Event [Member]      
Credit Facility [Abstract]      
Maximum borrowing capacity under credit facility   $ 375.0  
Revolving Credit Facility [Member] | Subsequent Event [Member]      
Credit Facility [Abstract]      
Maximum borrowing capacity under credit facility   $ 100.0  
Revolving Credit Facility [Member] | Notes Payable [Member] | Recourse [Member]      
Notes Payable [Abstract]      
Long-term Debt $ 29.0    
WFCDF [Member]      
Credit Facility [Abstract]      
Number of components under credit facility | Component 2    
Maximum borrowing capacity under credit facility $ 275.0    
Guarantor obligations for credit facility, maximum $ 10.5    
Period of notice required to terminate credit facility at quarter end 45 days    
Period of notice required to terminate credit facility at year end 90 days    
WFCDF [Member] | Minimum [Member]      
Credit Facility [Abstract]      
Period of temporary increase of aggregate limit on credit facility 30 days    
WFCDF [Member] | Maximum [Member]      
Credit Facility [Abstract]      
Aggregate period of temporary increase of aggregate limit on credit facility in a calendar year 150 days    
WFCDF [Member] | Floor Plan Component [Member]      
Credit Facility [Abstract]      
Amount outstanding under credit facility $ 145.9   $ 98.7
WFCDF [Member] | Account Receivable Component [Member]      
Credit Facility [Abstract]      
Maximum borrowing capacity under credit facility $ 100.0    
Basis spread on reference rate 2.00%    
Amount outstanding under credit facility $ 29.0   $ 0.0
WFCDF [Member] | Account Receivable Component [Member] | LIBOR [Member]      
Credit Facility [Abstract]      
Basis spread on reference rate 0.75%    
Debt instrument term of variable rate 1 month    
Election under WFCDF [Member]      
Credit Facility [Abstract]      
Maximum borrowing capacity under credit facility $ 350.0