Secured Loans Receivable - Schedule of Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Jun. 30, 2026 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Secured loans (current) | $ 107,415 | $ 115,128 |
| Bullion and Numismatic and Semi-numismatic and Graded Sports Memorabilia | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Secured loans (current) | $ 107,415 | $ 115,128 |
| Secured loans (current), percentage | 100.00% | 100.00% |
| Loan-to-value of Less than 75% | Bullion and Numismatic and Semi-numismatic and Graded Sports Memorabilia | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Secured loans (current) | $ 94,930 | $ 92,933 |
| Secured loans (current), percentage | 88.40% | 80.70% |
| Loan-to-value of 75% or More | Bullion and Numismatic and Semi-numismatic and Graded Sports Memorabilia | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Secured loans (current) | $ 12,485 | $ 22,195 |
| Secured loans (current), percentage | 11.60% | 19.30% |