Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Schedule of Sales and Purchases of Related Parties (Details)

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Related Party Transactions - Schedule of Sales and Purchases of Related Parties (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Related Party Transaction [Line Items]        
Sales $ 176,620 $ 409,214 $ 300,634 $ 915,785
Purchases 26,946 19,648 51,578 48,976
Stack's Bowers Galleries        
Related Party Transaction [Line Items]        
Sales 7,303 14,877 13,651 36,831
Purchases 13,931 14,322 29,310 36,335
Equity method investee        
Related Party Transaction [Line Items]        
Sales 169,317 391,617 286,983 872,117
Purchases $ 13,015 5,326 $ 22,268 7,872
SilverTowne L.P.        
Related Party Transaction [Line Items]        
Sales   $ 2,720   6,837
Purchases       $ 4,769