Quarterly report pursuant to Section 13 or 15(d)

Description of Business - Additional Information (Details)

v3.20.2
Description of Business - Additional Information (Details)
3 Months Ended
Sep. 30, 2020
reportable_segments
Description Of Business [Line Items]  
Number of reportable segments 3
AM&ST Associates, LLC  
Description Of Business [Line Items]  
Percentage of ownership owned by parent 69.00%
AM&ST Associates, LLC | SilverTowne L.P.  
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%