Annual report pursuant to Section 13 and 15(d)

Notes Payable (Notes Payable) (Details)

v3.3.1.900
Notes Payable (Notes Payable) (Details) - USD ($)
12 Months Ended
Jan. 02, 2015
Oct. 15, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jul. 31, 2014
Debt Instrument [Line Items]            
Unamortized discount     $ 1,492,000 $ 1,093,000    
Interest paid     3,807,000 5,920,000 $ 16,034,000  
Highland            
Debt Instrument [Line Items]            
Notes payable-current           $ 21,834,000
Highland | Promissory Notes | 10% Promissory Notes due February 26, 2019            
Debt Instrument [Line Items]            
Amount outstanding           $ 6,738,000
KMS            
Debt Instrument [Line Items]            
Notes payable-current   $ 600,000        
Term   4 years        
Interest rate, stated percentage   1.84%        
Imputed interest rate   5.50%        
KMS | Promissory Notes            
Debt Instrument [Line Items]            
Periodic payment, principal and interest   $ 7,508,000        
Imputed interest rate   5.50%        
KMS | Promissory Notes | 1.84% Promissory Notes            
Debt Instrument [Line Items]            
Term   4 years        
Debt instrument, face amount   $ 8,000,000        
Interest rate, stated percentage   1.84%        
Unamortized discount     343,000      
Long-term debt     5,711,000      
KMS | Promissory Notes | 1.84% Promissory Notes | Board of Directors Chairman [Member]            
Debt Instrument [Line Items]            
Long-term debt     3,069,000      
KMS | Promissory Notes | 1.84% Promissory Notes | President [Member]            
Debt Instrument [Line Items]            
Long-term debt     1,804,000      
KMS | Promissory Notes | 1.84% Promissory Notes | Chief Compliance Officer [Member]            
Debt Instrument [Line Items]            
Long-term debt     662,000      
KMS | Promissory Notes | 1.84% Promissory Notes | Vice President- Brokerage Operations [Member]            
Debt Instrument [Line Items]            
Long-term debt     238,000      
KMS | Promissory Notes | 1.84% Promissory Notes | Chief Technology Officer [Member]            
Debt Instrument [Line Items]            
Long-term debt     228,000      
KMS | Promissory Notes | 1.84% Promissory Notes | Vice President- Licensing and Administration [Member]            
Debt Instrument [Line Items]            
Long-term debt     54,000      
KMS | Subordinated Notes            
Debt Instrument [Line Items]            
Debt instrument, face amount   $ 600,000        
Interest paid     $ 26,000 $ 26,000    
KMS | Subordinated Notes | Prime Rate            
Debt Instrument [Line Items]            
Basis spread on variable rate   1.00%        
Interest rate at period end     3.50% 3.25%    
SSN | Promissory Notes            
Debt Instrument [Line Items]            
Periodic payment, principal and interest $ 18,697,000          
Imputed interest rate 5.10%          
SSN | Promissory Notes | 1.84% Promissory Notes            
Debt Instrument [Line Items]            
Debt instrument, face amount $ 20,000,000          
SSN | Promissory Notes | 1.84% Promissory Notes | President [Member]            
Debt Instrument [Line Items]            
Debt instrument, face amount     $ 327,000      
SSN | Promissory Notes | 1.84% Promissory Notes | Chief Compliance Officer [Member]            
Debt Instrument [Line Items]            
Debt instrument, face amount     82,000      
SSN | Promissory Notes | 1.84% Promissory Notes | Chief Financial Officer            
Debt Instrument [Line Items]            
Debt instrument, face amount     49,000      
SSN | Promissory Notes | 1.84% Promissory Notes | Vice President-Trading            
Debt Instrument [Line Items]            
Debt instrument, face amount     16,000      
SSN | Promissory Notes | 1.74% Promissory Notes            
Debt Instrument [Line Items]            
Term 4 years          
Interest rate, stated percentage 1.74%          
Imputed interest rate 5.10%          
Unamortized discount     977,000      
Long-term debt     $ 15,378,000