Quarterly report [Sections 13 or 15(d)]

Inventories - Additional Information (Details)

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Inventories - Additional Information (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2025
Jun. 30, 2024
Inventory [Line Items]    
Inventory held for sale $ 759,581 $ 579,400
Precious metals inventory subject to repurchase arrangements 122,200 199,600
Consignment arrangements with customers 1,700 2,400
Collectible coin inventory, held at lower of cost or net realizable value 58,769 3,236
Product financing arrangement, restricted 556,800 517,700
Unrealized gains (losses) included in inventory balance 114,000 55,500
Premium on metals position 41,666 34,175
Inventories    
Inventory [Line Items]    
Borrowed precious metals from suppliers 44,200 32,000
Inventory held for Sale    
Inventory [Line Items]    
Inventory held for sale $ 532,631 $ 342,196