Annual report pursuant to Section 13 and 15(d)

Notes Payable (Notes Payable) (Details)

v3.19.1
Notes Payable (Notes Payable) (Details) - USD ($)
1 Months Ended 12 Months Ended
Dec. 24, 2018
Aug. 09, 2018
Jun. 22, 2018
May 22, 2018
Dec. 12, 2017
Nov. 21, 2017
Jan. 02, 2015
Oct. 15, 2014
Jun. 30, 2018
Feb. 28, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Nov. 15, 2018
Nov. 01, 2018
Aug. 31, 2018
Jan. 01, 2018
Debt Instrument [Line Items]                                  
Unamortized discount                     $ 6,372,000 $ 424,000          
Notes payable                     254,072,000 96,849,000         $ 96,849,000
Brokerage commissions                     696,331,000 536,028,000 $ 510,023,000        
Cancellation of promissory notes as consideration for exercise price of warrants                     0 0 $ 17,976,000        
Notes payable to KMS                                  
Debt Instrument [Line Items]                                  
Unamortized discount                       98,000          
Notes payable                     0 1,958,000          
Notes payable to SSN                                  
Debt Instrument [Line Items]                                  
Unamortized discount                       326,000          
Notes payable                     0 6,074,000          
Senior Notes                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount                     693,000            
Senior Notes | 6.5% Senior Notes                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage           6.50%                      
Debt instrument, face amount         $ 76,569,000 $ 72,500,000                      
Unamortized discount                     67,000 $ 0          
Redemption price percentage           100.00%                      
Option for debt exercises         4,069,000                        
Debt issuance costs         3,313,000                        
Brokerage commissions         $ 1,187,000                        
Increase in debt instrument                   $ 25,000,000 $ 6,240,000            
Commissions receivable of gross sales (up to)                   2.00%              
Senior Notes | 7% Senior Notes                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage       7.00%             7.00%            
Debt instrument, face amount     $ 41,412,000 $ 40,000,000                          
Unamortized discount                     $ 45,000            
Redemption price percentage       100.00%                          
Option for debt exercises     1,412,000                            
Debt issuance costs     2,139,000                            
Brokerage commissions     $ 464,000                            
Increase in debt instrument                 $ 25,000,000   2,729,000            
Commissions receivable of gross sales (up to)       2.00%                          
Long-term debt                     $ 1,622,000            
Senior Notes | 7.25% Senior Notes                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage   7.25%                 7.25% 7.25% 7.25%        
Debt instrument, face amount   $ 60,000,000                              
Redemption price percentage   100.00%                              
Debt issuance costs   $ 2,190,000                              
Brokerage commissions   120,000                              
Gross proceeds   $ 60,000,000                              
Highland | Promissory Notes | 10% Promissory Notes due February 26, 2019                                  
Debt Instrument [Line Items]                                  
Amount outstanding                       $ 6,738,000          
Interest rate, stated percentage                     10.00%            
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]                                  
Interest rate, stated percentage               1.84%                  
Debt instrument, term               4 years                  
Debt instrument, face amount               $ 8,000,000                  
Unamortized discount                       98,000          
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 | 1.74% Promissory Notes                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage             1.74%                    
Debt instrument, term             4 years                    
Unamortized discount                       $ 326,000          
Kestler Financial Group | Notes Payable | Notes payable to Kestler Financial Group's former shareholders                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage                               4.00%  
Debt instrument, face amount                               $ 5,450,000  
Interest expense                     $ 73,000            
Four Seasons Financial Group | Notes Payable | Notes payable to Four Seasons Financial Group's former shareholders                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage                           4.75% 3.99%    
Debt instrument, face amount                             $ 372,000    
Interest expense                     $ 2,000            
Management | Senior Notes | 6.5% Senior Notes                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage           6.50%                      
Senior notes purchased by management and Board of Directors           $ 10,400,000                      
Repurchase Agreement | Senior Notes | 7.25% Senior Notes                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage 7.25%                                
Debt instrument, face amount $ 76,350,000                                
Repurchase Agreement | Notes Payable | Notes Payable to Frost former shareholders                                  
Debt Instrument [Line Items]                                  
Interest rate, stated percentage                     7.25%            
Interest expense                     $ 123,000            
Redemption price percentage                     100.00%            
Shares authorized for repurchase (in shares) 50,900,000                                
Share price $ 2.50                                
Cash used to fund Share Repurchase $ 50,900                                
Shares of common stock canceled 3,610,000                                
Cancellation of promissory notes as consideration for exercise price of warrants $ 3,000