Quarterly report pursuant to Section 13 or 15(d)

Inventories - Additional Information (Details)

v3.21.1
Inventories - Additional Information (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Mar. 31, 2021
Jun. 30, 2020
Dec. 31, 2020
Inventory [Line Items]      
Inventory held for sale [1] $ 310,854 $ 246,603  
Precious metals inventory subject to repurchase arrangements 76,000 71,000 $ 76,000
Consignment arrangements with customers 2,900 2,800  
Commemorative coin inventory, held at lower of cost or net realizable value 128 17  
Product financing arrangement, restricted 250,100 74,700  
Unrealized (losses) gains included in inventory balance (7,800) 6,500  
Premium on metals position 14,760 3,684  
Inventories      
Inventory [Line Items]      
Borrowed precious metals from suppliers 24,800 19,300  
Inventory held for Sale      
Inventory [Line Items]      
Inventory held for sale $ 207,104 $ 153,412  
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.