Other Expenses - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Management fees	$ 27,065	$ 21,545	$ 50,551	$ 40,752
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	$ 18,200	15,600	$ 36,300	31,100
Total incentive compensation payments	8,800	$ 6,000	14,300	$ 9,600
Accrued management and incentive fees payable	$ 27,100		$ 27,100		$ 28,400