Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Financing Agreements - Lines of Credit - Additional Information (Details) - Line of Credit - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Jun. 30, 2020
Trading Credit Facility          
Debt Instrument [Line Items]          
Interest expense $ 1,500,000 $ 1,900,000 $ 4,500,000 $ 6,000,000  
Percentage of total expense recognized 28.70% 38.30% 30.60% 39.20%  
Effective rate of interest 3.82% 4.15% 3.66% 4.37%  
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   $ 270,000,000    
Line of credit, current borrowing capacity 220,000,000   220,000,000    
Line of credit, accordion option 50,000,000   50,000,000    
Accumulated amortization of loan cost $ 1,200,000   $ 1,200,000   $ 500,000
Variable rate basis     one-month LIBOR    
Credit facility, interest rate at period end 0.11%   0.11%   0.16%
Borrowings due on demand $ 165,000,000   $ 165,000,000   $ 135,000,000
Borrowings available $ 94,000,000   94,000,000   $ 76,300,000
Line of credit facility, tangible net worth financial covenant     $ 55,700,000