Secured Loans Receivable - Schedule of Classes for Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Jun. 30, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loans	$ 120,351	$ 94,037
Secured loan, percentage	100.00%	100.00%
Bullion
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loans	$ 75,564	$ 54,843
Secured loan, percentage	62.80%	58.30%
Numismatic and Semi-numismatic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loans	$ 35,431	$ 32,439
Secured loan, percentage	29.40%	34.50%
Graded Sports Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loans	$ 9,356	$ 6,755
Secured loan, percentage	7.80%	7.20%