Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Schedule of Related Party Receivable and Payables Balances (Details)

v3.20.1
Related Party Transactions - Schedule of Related Party Receivable and Payables Balances (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Jun. 30, 2019
Related Party Transaction [Line Items]    
Receivables $ 9,387 $ 22,849
Payables 26,587 163
Stack's Bowers Galleries    
Related Party Transaction [Line Items]    
Receivables 6,935 17,630
Equity method investee    
Related Party Transaction [Line Items]    
Receivables 2,452 4,978
Payables 25,438 163
SilverTowne L.P.    
Related Party Transaction [Line Items]    
Receivables   $ 241
Payables $ 1,149