Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements Lines of Credit (Details)

v3.19.3.a.u2
Financing Agreements Lines of Credit (Details) - Line of Credit - USD ($)
3 Months Ended 6 Months Ended 45 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Jun. 30, 2019
Revolving Credit Facility | LIBOR            
Debt Instrument [Line Items]            
Variable rate     2.50%      
Trading Credit Facility            
Debt Instrument [Line Items]            
Interest expense $ 1,900,000 $ 1,900,000 $ 4,100,000 $ 3,900,000    
Percentage of total expense recognized 37.60% 39.90% 39.60% 47.40%    
Effective rate of interest 4.22% 4.80% 4.49% 4.66%    
Trading Credit Facility | A-Mark | Trading Credit Facility            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing capacity $ 260,000,000   $ 260,000,000   $ 260,000,000  
Line of credit, current borrowing capacity 210,000,000   210,000,000   210,000,000  
Line of credit, accordion option 50,000,000   50,000,000   50,000,000  
Payments of financing costs         3,400,000  
Accumulated amortization of loan cost $ 200,000   $ 200,000   $ 200,000 $ 600,000
Variable rate basis     one-month LIBOR      
Credit facility, interest rate at period end 1.76%   1.76%   1.76% 2.40%
Borrowings due on demand $ 180,000,000   $ 180,000,000   $ 180,000,000 $ 167,000,000
Borrowings available $ 36,000,000   36,000,000   $ 36,000,000 $ 11,600,000
Line of credit facility, tangible net worth financial covenant     $ 48,100,000      
Bridge Loan | LIBOR            
Debt Instrument [Line Items]            
Variable rate     4.50%