Commitments and Contingencies - Operating Leases - Additional Information (Detail) $ in Thousands	1 Months Ended	9 Months Ended
	Jan. 31, 2024 USD ($)	Sep. 30, 2024 USD ($) ft²	Aug. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Commitments And Contingencies [Line Items]
Operating lease option to extend		true
Operating lease renewal term		5 years
Operating lease, right-of-use asset		$ 11,251		$ 4,458
Operating lease, liability		$ 10,274
Lease Agreements [Member]
Commitments And Contingencies [Line Items]
Office space rent under operating lease | ft²		30,567
Lease expire date		Feb. 28, 2030
Operating lease option to extend		The Company has the option to extend the New Lease one time for an additional five-year period
Lease commencement date	Sep. 01, 2024
Operating lease, right-of-use asset			$ 11,500
Operating lease, liability			10,000
Reclassification from prepaid expenses and other current assets to right-of-use asset related to build out costs			$ 1,400
Initial term	66 months
Operating lease option to extend additional period	5 years
Letter of Credit [Member] | Lease Agreements [Member]
Commitments And Contingencies [Line Items]
Security deposit	$ 1,400
Security deposit amount reduced for third anniversary	$ 1,200
Operating Lease One [Member]
Commitments And Contingencies [Line Items]
Office space rent under operating lease | ft²		63,017
Lease expire date		Aug. 31, 2024
Operating Lease Two [Member]
Commitments And Contingencies [Line Items]
Office space rent under operating lease | ft²		40,419
Lease expire date		Aug. 31, 2024
Operating Lease Three [Member]
Commitments And Contingencies [Line Items]
Office space rent under operating lease | ft²		15,525
Lease expire date		Nov. 30, 2024
Maximum [Member]
Commitments And Contingencies [Line Items]
Operating lease remaining lease terms		5 years 6 months