Annual report pursuant to Section 13 and 15(d)

Goodwill (Changes To The Carrying Amount) (Detail)

v3.8.0.1
Goodwill (Changes To The Carrying Amount) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Goodwill [Roll Forward]    
Beginning balance $ 124,031 $ 125,572
Correction related to acquisition purchase price allocation 179 (2,870)
Business acquisitions   1,329
Ending balance 124,210 124,031
Ladenburg    
Goodwill [Roll Forward]    
Beginning balance 301 301
Correction related to acquisition purchase price allocation 0 0
Business acquisitions   0
Ending balance 301 301
Independent Advisory and Brokerage Services    
Goodwill [Roll Forward]    
Beginning balance 111,031 112,572
Correction related to acquisition purchase price allocation 179 (2,870)
Business acquisitions   1,329
Ending balance 111,210 111,031
Insurance Brokerage    
Goodwill [Roll Forward]    
Beginning balance 12,699 12,699
Correction related to acquisition purchase price allocation 0 0
Business acquisitions   0
Ending balance $ 12,699 $ 12,699