Annual report pursuant to Section 13 and 15(d)

BORROWINGS - Notes Payable Narrative (Details)

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BORROWINGS - Notes Payable Narrative (Details) - USD ($)
$ in Thousands
 1 Months Ended
May 31, 2023
Aug. 31, 2021
Mar. 31, 2021
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Debt Instrument [Line Items]                        
Aggregate principal amount     $ 155,434 $ 404,238 $ 297,688 $ 267,584 $ 54,296 $ 58,096 $ 112,096 $ 74,796 $ 100,096 $ 123,896
Notes Payable                        
Debt Instrument [Line Items]                        
Aggregate principal amount       $ 337,238 $ 262,488              
Notes Payable | 5.00% 2026 Notes                        
Debt Instrument [Line Items]                        
Interest Rate     5.00% 5.00% 5.00%              
Aggregate principal amount     $ 127,900 $ 127,938 $ 127,938              
Proceeds from issuance of long-term debt     123,800                  
Borrowings outstanding at cost     $ 4,100                  
Notes payable, fair value disclosure       $ 123,900 $ 121,500              
Notes Payable | 4.875% 2028 Notes                        
Debt Instrument [Line Items]                        
Interest Rate   4.875%   4.875% 4.875%              
Aggregate principal amount   $ 134,600   $ 134,550 $ 134,550              
Proceeds from issuance of long-term debt   131,300                    
Borrowings outstanding at cost   $ 3,300                    
Notes payable, fair value disclosure       $ 123,700 $ 127,400              
Notes Payable | 8.00% Notes due 2028                        
Debt Instrument [Line Items]                        
Interest Rate 8.00%     8.00%                
Aggregate principal amount $ 74,800     $ 74,750                
Proceeds from issuance of long-term debt 72,300                      
Borrowings outstanding at cost $ 2,500                      
Notes payable, fair value disclosure       $ 77,300