XML 45 R37.htm IDEA: XBRL DOCUMENT v2.4.0.8
Business Information - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
sources
Segment
Jun. 30, 2012
Segment Reporting Information        
Number of Reportable Segments     1  
Number of principal sources of revenue     2  
Advisory revenues $ 83,066 $ 45,148 $ 164,513 $ 118,403
Investment Revenues 3,624 2,170 1,767 11,604
Advisory revenues as a percentage of total revenue (percent) 100.00% 100.00% 100.00% 100.00%
Total Revenues $ 86,690 $ 47,318 $ 166,280 $ 130,007
Advisory revenues
       
Segment Reporting Information        
Advisory revenues as a percentage of total revenue (percent) 96.00% 95.00% 99.00% 91.00%
Investment Revenues [Member]
       
Segment Reporting Information        
Advisory revenues as a percentage of total revenue (percent) 4.00% 5.00% 1.00% 9.00%