Quarterly report pursuant to sections 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v2.4.0.8
Related Party Transactions - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Related Party Transaction [Line Items]          
Income from management fees $ 2,211 $ 2,058 $ 6,690 $ 6,293  
Income from performance fees 14 34 17 50  
Due to related parties 1,594   1,594   1,622
Income from advisory fees 126 112 331 326  
Receivable from partners $ 22   $ 22   $ 17
Minimum
         
Related Party Transaction [Line Items]          
Management and advisory fees percentage     0.00%    
Percentage of performance fees     0.00%    
Maximum
         
Related Party Transaction [Line Items]          
Management and advisory fees percentage     1.75%    
Percentage of performance fees     10.00%