Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Details)

v3.22.2.2
Related Party Transactions - Additional Information (Details)
12 Months Ended
Jun. 30, 2022
USD ($)
Investment
Jun. 30, 2021
USD ($)
Jun. 27, 2022
USD ($)
Related Party Transaction [Line Items]      
Number of investments | Investment 5    
Carrying Value $ 70,600,000 $ 18,200,000  
Earnings from equity method investments 6,907,000 15,547,000  
Interest income 2,200,000 1,100,000  
Dividend received from equity method investee $ 1,678,000 343,000  
Silver Gold Bull, Inc.      
Related Party Transaction [Line Items]      
Business acquisition, option to purchase additional percentage of the outstanding equity 27.60%   27.60%
Business acquisition, percentage of interests acquired     40.00%
Fair value of option to purchase investment $ 5,300,000   $ 5,300,000
Exercise of option to acquire additional ownership interest start month and year 2023-12    
Exercise of option to acquire additional ownership interest end month and year 2024-09    
March 1, 2018 Loan Agreement      
Related Party Transaction [Line Items]      
Maximum borrowing capacity available $ 10,000,000.0    
Participation interest, percentage of net profits realized on sale 10.00%    
March 4, 2022 Loan Agreement      
Related Party Transaction [Line Items]      
Maximum borrowing capacity available $ 3,000,000.0    
Equity method investee      
Related Party Transaction [Line Items]      
Number of investments | Investment 4    
Stack's Bowers Galleries | March 1, 2018 Loan Agreement      
Related Party Transaction [Line Items]      
Short term loan receivable $ 0.0 $ 3,000,000.0  
Stack's Bowers Galleries | March 4, 2022 Loan Agreement      
Related Party Transaction [Line Items]      
Short term loan receivable $ 0.0