Summary of Significant Accounting Policies (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2023 installment	Dec. 31, 2023 segment installment
Significant Accounting Policies [Line Items]
Number of reportable segments | segment		1
Number of installment | installment	4	4
Limited partnership interest, conversion ratio	1	1
Quarterly percentage to preferred units	0.006875	0.006875
Percentage to preferred units		2.75%
Software, including software development costs
Significant Accounting Policies [Line Items]
Software amortization period	3 years	3 years
Minimum
Significant Accounting Policies [Line Items]
Restricted stock saleable period		5 years
Minimum | Limited Partnership
Significant Accounting Policies [Line Items]
Shares vesting period		2 years
Minimum | Computer and communications equipment
Significant Accounting Policies [Line Items]
Useful life of computer software	3 years	3 years
Maximum
Significant Accounting Policies [Line Items]
Restricted stock saleable period		10 years
Maximum | Limited Partnership
Significant Accounting Policies [Line Items]
Shares vesting period		5 years
Maximum | Computer and communications equipment
Significant Accounting Policies [Line Items]
Useful life of computer software	5 years	5 years