Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers - Impact on Statement of Financial Condition (Details)

v3.10.0.1
Revenue from Contracts with Customers - Impact on Statement of Financial Condition (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Jan. 01, 2018
Dec. 31, 2017
Sep. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cash and cash equivalents $ 262,834 $ 172,103 $ 172,103 $ 100,739
Securities owned, at fair value 5,451 3,881 3,881  
Receivables from clearing brokers 26,650 48,543 48,543  
Receivables from other broker-dealers 1,472 2,822 2,822  
Notes receivable from financial advisors, net 6,520 6,803 47,369  
Other receivables, net 130,507 119,356 60,707  
Fixed assets, net 28,590 23,621 23,621  
Restricted cash 6,589 760 760  
Intangible assets, net 74,233 79,966 103,611  
Goodwill 125,966 124,210 124,210  
Contract acquisition costs, net 77,803 61,340 0  
Cash surrender value of life insurance 13,478 12,711 12,711  
Other assets 40,498 31,712 31,687  
Total assets 800,591 687,828 632,025 $ 552,615
Securities sold, but not yet purchased, at fair value 66 231 231  
Accrued compensation 32,013 33,233 33,343  
Commissions and fees payable 109,247 96,616 67,221  
Accounts payable and accrued liabilities 50,122 39,241 40,478  
Deferred rent 2,970 2,151 2,151  
Deferred income taxes 12,659 6,603 2,968  
Deferred compensation liability 21,963 18,161 18,161  
Accrued interest 0 232 232  
Notes payable 185,199 96,849 96,849  
Total liabilities 414,239 293,317 261,634  
Commitments and contingencies (Note 11)  
Preferred stock 2 2 2  
Common stock 20 20 20  
Additional paid-in capital 487,752 520,135 520,135  
Accumulated deficit (101,467) (125,669) (149,778)  
Total shareholders’ equity of the Company 386,307 394,488 370,379  
Noncontrolling interest 45 23 12  
Total shareholders' equity 386,352 394,511 370,391  
Total liabilities and shareholders' equity 800,591 687,828 632,025  
Calculated under Revenue Guidance in Effect before Topic 606        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cash and cash equivalents 262,834   172,103  
Securities owned, at fair value 5,451   3,881  
Receivables from clearing brokers 26,650   48,543  
Receivables from other broker-dealers 1,472   2,822  
Notes receivable from financial advisors, net 57,983   47,369  
Other receivables, net 69,161   60,707  
Fixed assets, net 28,590   23,621  
Restricted cash 6,589   760  
Intangible assets, net 93,937   103,611  
Goodwill 125,966   124,210  
Contract acquisition costs, net 0   0  
Cash surrender value of life insurance 13,478   12,711  
Other assets 39,976   31,687  
Total assets 732,087   632,025  
Securities sold, but not yet purchased, at fair value 66   231  
Accrued compensation 32,115   33,343  
Commissions and fees payable 78,635   67,221  
Accounts payable and accrued liabilities 50,536   40,478  
Deferred rent 2,970   2,151  
Deferred income taxes 6,549   2,968  
Deferred compensation liability 21,963   18,161  
Accrued interest 0   232  
Notes payable 185,199   96,849  
Total liabilities 378,033   261,634  
Commitments and contingencies (Note 11)      
Preferred stock 2   2  
Common stock 20   20  
Additional paid-in capital 487,752   520,135  
Accumulated deficit (133,754)   (149,778)  
Total shareholders’ equity of the Company 354,020   370,379  
Noncontrolling interest 34   12  
Total shareholders' equity 354,054   370,391  
Total liabilities and shareholders' equity 732,087   632,025  
Accounting Standards Update 2014-09        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Contract acquisition costs, net   40,566    
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cash and cash equivalents 0      
Securities owned, at fair value 0      
Receivables from clearing brokers 0      
Receivables from other broker-dealers 0      
Notes receivable from financial advisors, net (51,463)      
Other receivables, net 61,346      
Fixed assets, net 0      
Restricted cash 0      
Intangible assets, net (19,704)      
Goodwill 0      
Contract acquisition costs, net 77,803      
Cash surrender value of life insurance 0      
Other assets 522      
Total assets 68,504      
Securities sold, but not yet purchased, at fair value 0      
Accrued compensation (102)      
Commissions and fees payable 30,612      
Accounts payable and accrued liabilities (414)      
Deferred rent 0      
Deferred income taxes 6,110      
Deferred compensation liability 0      
Accrued interest 0      
Notes payable 0      
Total liabilities 36,206      
Preferred stock 0      
Common stock 0      
Additional paid-in capital 0      
Accumulated deficit 32,287 $ 24,109    
Total shareholders’ equity of the Company 32,287      
Noncontrolling interest 11      
Total shareholders' equity 32,298      
Total liabilities and shareholders' equity $ 68,504      
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 | Investment Banking        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cash and cash equivalents     0  
Securities owned, at fair value     0  
Receivables from clearing brokers     0  
Receivables from other broker-dealers     0  
Notes receivable from financial advisors, net     0  
Other receivables, net     (137)  
Fixed assets, net     0  
Restricted cash     0  
Intangible assets, net     0  
Goodwill     0  
Contract acquisition costs, net     0  
Cash surrender value of life insurance     0  
Other assets     25  
Total assets     (112)  
Securities sold, but not yet purchased, at fair value     0  
Accrued compensation     (110)  
Commissions and fees payable     0  
Accounts payable and accrued liabilities     (104)  
Deferred rent     0  
Deferred income taxes     28  
Deferred compensation liability     0  
Accrued interest     0  
Notes payable     0  
Total liabilities     (186)  
Commitments and contingencies (Note 11)      
Preferred stock     0  
Common stock     0  
Additional paid-in capital     0  
Accumulated deficit     74  
Total shareholders’ equity of the Company     74  
Noncontrolling interest     0  
Total shareholders' equity     74  
Total liabilities and shareholders' equity     (112)  
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 | Insurance Renewals        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cash and cash equivalents     0  
Securities owned, at fair value     0  
Receivables from clearing brokers     0  
Receivables from other broker-dealers     0  
Notes receivable from financial advisors, net     0  
Other receivables, net     58,786  
Fixed assets, net     0  
Restricted cash     0  
Intangible assets, net     (23,645)  
Goodwill     0  
Contract acquisition costs, net     0  
Cash surrender value of life insurance     0  
Other assets     0  
Total assets     35,141  
Securities sold, but not yet purchased, at fair value     0  
Accrued compensation     0  
Commissions and fees payable     29,395  
Accounts payable and accrued liabilities     0  
Deferred rent     0  
Deferred income taxes     1,489  
Deferred compensation liability     0  
Accrued interest     0  
Notes payable     0  
Total liabilities     30,884  
Commitments and contingencies (Note 11)      
Preferred stock     0  
Common stock     0  
Additional paid-in capital     0  
Accumulated deficit     4,257  
Total shareholders’ equity of the Company     4,257  
Noncontrolling interest     0  
Total shareholders' equity     4,257  
Total liabilities and shareholders' equity     35,141  
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 | Costs to obtain or fulfill a contract        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cash and cash equivalents     0  
Securities owned, at fair value     0  
Receivables from clearing brokers     0  
Receivables from other broker-dealers     0  
Notes receivable from financial advisors, net     (40,566)  
Other receivables, net     0  
Fixed assets, net     0  
Restricted cash     0  
Intangible assets, net     0  
Goodwill     0  
Contract acquisition costs, net     61,340  
Cash surrender value of life insurance     0  
Other assets     0  
Total assets     20,774  
Securities sold, but not yet purchased, at fair value     0  
Accrued compensation     0  
Commissions and fees payable     0  
Accounts payable and accrued liabilities     (1,133)  
Deferred rent     0  
Deferred income taxes     2,118  
Deferred compensation liability     0  
Accrued interest     0  
Notes payable     0  
Total liabilities     985  
Commitments and contingencies (Note 11)      
Preferred stock     0  
Common stock     0  
Additional paid-in capital     0  
Accumulated deficit     19,778  
Total shareholders’ equity of the Company     19,778  
Noncontrolling interest     11  
Total shareholders' equity     19,789  
Total liabilities and shareholders' equity     $ 20,774