XML 55 R44.htm IDEA: XBRL DOCUMENT v3.5.0.2
Investments Investments - Summary of Investment in Private Equity Funds (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds $ 86,532 $ 86,287
Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 19,880 26,473
ECP II [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 945 983
Discovery Fund [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 7,459 6,632
GMCP II [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 5,606 6,091
GMCP III [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 529 5,786
CSI Capital [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 0 35
Trilantic IV [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds 227 2,829
Trilantic V [Member] | Private Equity Funds [Member]    
Schedule of Equity Method Investments [Line Items]    
Investment in private equity funds $ 5,114 $ 4,117