Commitments And Contingencies - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Commitments and Contingencies [Line Items]
Commitment to purchase alternative investment	$ 50,000,000
Funded commitment amount	18,300,000
Future Funding Commitments	34,100,000	2,490,000
Unfunded Commitments | European Non-Performing Loan Fund, LP
Commitments and Contingencies [Line Items]
Future Funding Commitments	$ 31,700,000