Quarterly report pursuant to Section 13 or 15(d)

Inventories - Additional Information (Details)

v3.20.4
Inventories - Additional Information (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2020
Jun. 30, 2020
Inventory [Line Items]    
Inventory held for sale [1] $ 245,151 $ 246,603
Precious metals inventory subject to repurchase arrangements 100,000 71,000
Consignment arrangements with customers 1,600 2,800
Commemorative coin inventory, held at lower of cost or net realizable value 9 17
Product financing arrangement, restricted 272,500 74,700
Unrealized gains included in inventory balance 21,500 6,500
Premium on metals position 11,967 3,684
Inventories    
Inventory [Line Items]    
Borrowed precious metals from suppliers 21,500 19,300
Inventory held for Sale    
Inventory [Line Items]    
Inventory held for sale $ 122,107 $ 153,412
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.