Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements - Lines of Credit - Additional Information (Details)

v3.20.2
Financing Agreements - Lines of Credit - Additional Information (Details) - Line of Credit - USD ($)
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
Bridge Loan | LIBOR      
Debt Instrument [Line Items]      
Variable rate 4.50%    
Trading Credit Facility      
Debt Instrument [Line Items]      
Interest expense $ 1,400,000 $ 2,100,000  
Percentage of total expense recognized 31.80% 41.60%  
Effective rate of interest 2.95% 4.75%  
Revolving Credit Facility | LIBOR      
Debt Instrument [Line Items]      
Variable rate 2.50%    
A-Mark | Trading Credit Facility      
Debt Instrument [Line Items]      
Line of credit facility, maximum borrowing capacity $ 270,000,000    
Line of credit, current borrowing capacity 257,500,000    
Line of credit, accordion option 12,500,000    
Payments of financing costs 4,500,000    
Accumulated amortization of loan cost $ 700,000   $ 500,000
Variable rate basis one-month LIBOR    
Credit facility, interest rate at period end 0.15%   0.16%
Borrowings due on demand $ 214,000,000   $ 135,000,000
Borrowings available 86,100,000   $ 76,300,000
Line of credit facility, tangible net worth financial covenant $ 55,700,000