v3.25.2
Transactions with Controlled Companies - MITY, Inc. (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Interest Income $ 671,109 $ 770,312 $ 760,785
Structuring Fee 12,348 27,666 18,131
Total Other Income 28,949 79,397 83,023
Realized (Loss) Gain (518,682) (417,443) (41,046)
Interest Receivable $ 25,144 $ 26,936  
MITY, Inc. | MITY Holdings of Delaware Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Ownership interest 100.00% 100.00%  
MITY-Lite, Inc. | MITY, Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Ownership interest 100.00% 100.00%  
Broda Enterprises ULC | MITY, Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Ownership interest 100.00% 100.00%  
Broda USA, Inc. | MITY, Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Ownership interest 100.00% 100.00%  
Reportable Legal Entities | Subsidiaries | MITY, Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Interest Income $ 9,336 $ 8,988 8,177
Structuring Fee 107 130 0
Total Other Income 107 130 0
Realized (Loss) Gain 12 (1) (2)
Additions 4,265 5,150 0
Interest Income Capitalized as PIK 0 0 2,692
Repayment of Loan Receivable 0 0 3,265
Interest Receivable 26 79  
Other Receivables 65 5  
Reportable Legal Entities | Subsidiaries | MITY, Inc. | Prospect Administration      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Managerial Assistance 376 300 300
Reimbursement of Legal, Tax, etc $ 37 $ 23 $ 0
Reportable Legal Entities | Subsidiaries | MITY Holdings of Delaware Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Ownership interest 100.00% 100.00%  
Reportable Legal Entities | Subsidiaries | MITY FSC, Inc.      
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]      
Ownership interest 100.00% 100.00%