Quarterly report pursuant to Section 13 or 15(d)

Description of Business - Additional Information (Details)

v3.20.4
Description of Business - Additional Information (Details)
6 Months Ended
Dec. 31, 2020
reportable_segments
Description Of Business [Line Items]  
Number of reportable segments 3
A Mark Precious Metals, Inc | AM&ST Associates, LLC  
Description Of Business [Line Items]  
Percentage of ownership owned by parent 69.00%
A Mark Precious Metals, Inc | SilverTowne L.P. | AM&ST Associates, LLC  
Description Of Business [Line Items]  
Percentage of ownership owned by noncontrolling Owners 31.00%
Precious Metals Purchasing Partners, LLC  
Description Of Business [Line Items]  
Percentage of ownership percentage 50.00%