Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements (Subordinate Debt Financing) (Details)

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Financing Agreements (Subordinate Debt Financing) (Details) - USD ($)
3 Months Ended
Aug. 28, 2017
Sep. 30, 2018
Sep. 30, 2017
Jun. 30, 2018
Debt Instrument [Line Items]        
Percentage of total expense recognized   7.20%    
Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition $ 7,500,000      
Borrowings due on demand   $ 7,300,000   $ 7,200,000
Unamortized debt issuance expense   243,000   $ 274,000
Debt issuance costs, net   212,000    
Interest expense, notes payable   $ 195,000 $ 79,000  
Percentage of total expense recognized   5.50% 2.90%  
Effective rate of interest   8.84% 9.38%  
Affiliates | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 4,550,000      
Chief Executive Officer, Director and principal stockholder | Gregory N. Roberts | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 587,500      
Principal stockholder | William D. Richardson | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 587,500      
Chairman of the Board and Director | Jeffrey D. Benjamin | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 1,000,000      
Director | Ellis Landau | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 375,000      
Director | William Montgomery | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 1,500,000      
Director | Jess Ravich | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition 500,000      
Non-affiliated members | Goldline, LLC        
Debt Instrument [Line Items]        
Liabilities incurred for the acquisition $ 2,950,000      
Silver Bow Ventures, LLC | Gregory N. Roberts        
Debt Instrument [Line Items]        
Ownership percentage   50.00%    
Percentage of indebtedness (percentage)   50.00%    
Silver Bow Ventures, LLC | William D. Richardson        
Debt Instrument [Line Items]        
Ownership percentage   50.00%    
Percentage of indebtedness (percentage)   50.00%    
Libra Securities Holdings, LLC | Jess Ravich        
Debt Instrument [Line Items]        
Ownership percentage   100.00%    
Loans Payable | Goldline, LLC        
Debt Instrument [Line Items]        
Stated interest rate (in percentage) 8.50%      
Debt instrument, additional interest, percentage of total principal (in percentage) 3.00%      
Debt instrument, additional interest, percentage of cumulative three year EBITDA (in percentage) 10.00%      
Debt instrument, additional interest, percentage of cumulative three year EBITDA, amount $ 10,000,000      
Debt instrument, term (years) 3 years