Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements Liability on Borrowed Metals (Details)

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Financing Agreements Liability on Borrowed Metals (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jun. 30, 2019
Related Party Transaction [Line Items]    
Liabilities on borrowed metals $ 192,889 $ 201,144
Precious Metals Held Under Financing Arrangements    
Related Party Transaction [Line Items]    
Borrowed precious metals from suppliers 171,000 179,300
Inventories    
Related Party Transaction [Line Items]    
Borrowed precious metals from suppliers $ 21,900 $ 21,800