Other Expenses - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Management fees	$ 119,089	$ 110,292	$ 88,467
Manager
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Management base fee percentage	1.50%
Management incentive fee percentage	20.00%
Management core earnings fee percentage	7.00%
Management core earnings fee measurement period (in years)	3 years
Management core earnings fee minimum threshold	0.00%
Management fees	$ 74,800	73,000	64,200
Total incentive compensation payments	44,200	37,300	$ 24,300
Accrued management and incentive fees payable	$ 26,300	$ 33,800