Leases - Additional Information (Detail) $ in Thousands	1 Months Ended		12 Months Ended
	Jul. 31, 2020 USD ($) Term	May 31, 2020 Term	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Lessee Lease Description [Line Items]
Operating lease, right-of-use asset			$ 153,993	$ 156,921
Operating lease liability			$ 238,632	$ 244,021
Framingham Lease [Member]
Lessee Lease Description [Line Items]
Lease expiration, month and year		2036-03
Lessee, operating sublease, existence of option to extend		true
Number of additional renewal terms | Term		2
Lease renewal term under each extension option		7 years
2020 Boston Lease [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, existence of option to extend	true
Lessee, operating lease, option to extend			an option to extend the term of the lease for two additional five-year periods
Lease expiration, month and year	2034-03
Extended term of lease expiration	5 years
Number of additional renewal terms | Term	2
Operating lease, right-of-use asset	$ 149,800
Operating lease liability	147,900
Tenant incentives	$ 49,200