Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2014
Commitments and Contingencies [Line Items]
Commitment to purchase alternative investment			$ 50,000
Future Funding Commitments	$ 14,214	$ 14,214
European Non-Performing Loan Fund, LP
Commitments and Contingencies [Line Items]
Funded commitment amount	35,800
Unfunded Commitments | European Non-Performing Loan Fund, LP
Commitments and Contingencies [Line Items]
Future Funding Commitments	$ 14,200