Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Transactions - Summary of Hedging Activities Shows Precious Metal Commodity Inventory Position Net of Open Sale and Purchase Commitments (Details)

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Derivative Instruments and Hedging Transactions - Summary of Hedging Activities Shows Precious Metal Commodity Inventory Position Net of Open Sale and Purchase Commitments (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Jun. 30, 2020
Derivatives, Fair Value [Line Items]    
Inventories $ 560,921 $ 321,281
Precious metals held under financing arrangements [1] 160,988 178,577
Inventory and precious metals held under financing arrangements 721,909 499,858
Commemorative coin inventory, held at lower of cost or net realizable value (128) (17)
Premium on metals position (14,760) (3,684)
Precious metal value not hedged (14,888) (3,701)
Subtotal 707,021 496,157
Commitments at market:    
Open inventory purchase commitments 797,094 514,553
Open inventory sales commitments (571,830) (309,134)
Margin sale commitments (7,490) (14,652)
In-transit inventory no longer subject to market risk (43,167) (3,605)
Unhedgeable premiums on open commitment positions 6,375 2,779
Borrowed precious metals (109,735) (168,206)
Product financing arrangements (250,067) (74,678)
Advances on industrial metals 196 318
Commitments at market (178,624) (52,625)
Precious metal subject to price risk 528,397 443,532
Precious metal subject to derivative financial instruments:    
Market value of derivative financial instruments 528,089 443,790
Net precious metals subject to commodity price risk 308 (258)
Precious metals forward contracts at market values    
Precious metal subject to derivative financial instruments:    
Market value of derivative financial instruments 129,423 73,948
Precious metals futures contracts at market values    
Precious metal subject to derivative financial instruments:    
Market value of derivative financial instruments $ 398,666 $ 369,842
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.