Annual report pursuant to Section 13 and 15(d)

Inventories (Summary of Inventories) (Details)

v3.10.0.1
Inventories (Summary of Inventories) (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Inventory [Line Items]    
Inventories $ 166,176 $ 149,316
Restricted inventories 113,940 135,343
Restricted and nonrestricted inventory, net 280,116 284,659
Inventory held for sale    
Inventory [Line Items]    
Inventories 32,605 43,787
Repurchase arrangements with customers    
Inventory [Line Items]    
Inventories 104,907 92,496
Consignment arrangements with customers    
Inventory [Line Items]    
Inventories 10,785 7,368
Commemorative coins, held at lower of cost or market    
Inventory [Line Items]    
Inventories 99 40
Borrowed precious metals    
Inventory [Line Items]    
Inventories 17,780 5,625
Product financing arrangements, restricted    
Inventory [Line Items]    
Restricted inventories $ 113,940 $ 135,343