XML 85 R70.htm IDEA: XBRL DOCUMENT v3.6.0.2
Investments (Schedule of Fair Value of Equity Investments Trading) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Investment [Line Items]    
Equity investments trading $ 383,313 $ 393,877
Financials    
Investment [Line Items]    
Equity investments trading 275,065 193,716
Communications and technology    
Investment [Line Items]    
Equity investments trading 36,770 65,833
Industrial, utilities and energy    
Investment [Line Items]    
Equity investments trading 30,303 51,168
Consumer    
Investment [Line Items]    
Equity investments trading 20,501 40,918
Healthcare    
Investment [Line Items]    
Equity investments trading 17,245 36,148
Basic materials    
Investment [Line Items]    
Equity investments trading $ 3,429 $ 6,094