Annual report pursuant to Section 13 and 15(d)

Receivables (Details)

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Receivables (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Receivables, gross     $ 35,886 $ 39,325
Less: allowance for doubtful accounts $ (30) $ (30) (30) (30)
Receivables, net     35,856 39,295
Allowance for Doubtful Accounts Receivable [Roll Forward]        
Beginning Balance 30 30    
Provision 0 0    
Charge-off 0 0    
Ending Balance $ 30 $ 30    
Customer trade receivables        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Receivables, gross     22,813 31,949
Wholesale trade advances        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Receivables, gross     10,722 2,457
Due from brokers        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Receivables, gross     $ 2,351 $ 4,919