Annual report pursuant to Section 13 and 15(d)

Accrued Expenses (Details)

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Accrued Expenses (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Components of accrued expenses        
Accrued investment manager fees $ 12,937 $ 8,451    
Accrued compensation and related taxes 5,726 4,230    
Accrued professional services 408 481    
Accrued restructuring charges    290 228   
Other accrued expenses 1,130 1,467    
Total accrued expenses $ 20,201 $ 14,919