Other Expenses - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Management fees	$ 32,815	$ 27,065	$ 63,865	$ 50,551
Manager
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Management base fee percentage	1.50%		1.50%
Management incentive fee percentage	20.00%		20.00%
Management core earnings fee percentage	7.00%		7.00%
Management core earnings fee measurement period (in years)			3 years
Management core earnings fee minimum threshold			0.00%
Management fees	$ 18,600	18,200	$ 37,200	36,300
Total incentive compensation payments	14,200	$ 8,800	26,700	$ 14,300
Accrued management and incentive fees payable	$ 32,800		$ 32,800		$ 33,800