Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements - Liability on Borrowed Metals - Additional Information (Details)

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Financing Agreements - Liability on Borrowed Metals - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Jun. 30, 2021
Liabilities On Borrowed Metals [Line Items]          
Liabilities on borrowed metals $ 67,824   $ 67,824   $ 91,866
Liabilities on Borrowed Metals          
Liabilities On Borrowed Metals [Line Items]          
Interest expense $ 400 $ 300 $ 900 $ 1,200  
Percentage of total expense recognized 6.40% 6.20% 5.80% 8.50%  
Precious Metals Held Under Financing Arrangements          
Liabilities On Borrowed Metals [Line Items]          
Borrowed precious metals from suppliers $ 45,700   $ 45,700   71,000
Inventories          
Liabilities On Borrowed Metals [Line Items]          
Borrowed precious metals from suppliers $ 22,100   $ 22,100   $ 20,900