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, 2017
Sep. 30, 2016
Debt Instrument [Line Items]      
Amortization of loan cost   $ 233,000 $ 204,000
Interest expense, notes payable   $ 79,000  
Percentage of total expense recognized   2.90%  
Debt, weighted average interest rate (percentage)   9.38%  
Goldline, LLC      
Debt Instrument [Line Items]      
Liabilities incurred for the acquisition $ 7,500,000    
Amortization of loan cost 200,000    
Debt issuance costs, net 500,000    
Borrowings due on demand   $ 6,800,000  
Unamortized debt issuance expense   700,000  
Debt issuance costs, estimated, based on discounted cash flow model   $ 300,000  
Affiliates | Goldline, LLC      
Debt Instrument [Line Items]      
Liabilities incurred for the acquisition 4,600,000    
Chief Executive Officer, Director and principal stockholder | Gregory N. Roberts | Goldline, LLC      
Debt Instrument [Line Items]      
Liabilities incurred for the acquisition 600,000    
Principal stockholder | William D. Richardson | Goldline, LLC      
Debt Instrument [Line Items]      
Liabilities incurred for the acquisition 600,000    
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 400,000    
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 $ 3,000,000    
Silver Bow Ventures, LLC      
Debt Instrument [Line Items]      
Percentage of indebtedness   50.00%  
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