Quarterly report pursuant to Section 13 or 15(d)

Secured Loans Receivable - Additional Information (Details)

v3.20.2
Secured Loans Receivable - Additional Information (Details)
3 Months Ended 12 Months Ended
Sep. 30, 2020
USD ($)
loan
Sep. 30, 2019
USD ($)
Jun. 30, 2020
loan
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans receivable average effective rate of interest (percentage) 8.90%   8.90%
Loans receivable payment terms for interest 180 days    
Loan receivable liquidation period post default 20 days    
Number of loans | loan 0   0
Loan impairment costs | $ $ 0 $ 0  
Maximum      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Percentage of loan balance outstanding 85.00%    
Secured loans-to-value percentage 100.00%   100.00%
Bullion      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Percentage of Loan-to-value ratio 75.00%    
Numismatic and Semi-numismatic      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Percentage of Loan-to-value ratio 65.00%