Inventories - Summary of Components of Inventory (Parenthetical) (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Jun. 30, 2026 |
|---|---|---|
| Inventory [Line Items] | ||
| Restricted inventories | $ 1,088,023 | $ 798,485 |
| Borrowed Precious Metals | ||
| Inventory [Line Items] | ||
| Restricted inventories | $ 773,100 | $ 709,200 |