Leases - Additional Information (Detail) $ in Thousands	1 Months Ended	6 Months Ended
	Feb. 28, 2022 ft²	Jun. 30, 2024 USD ($) ft²	Jun. 30, 2023	Dec. 31, 2023 USD ($)
Lessee Lease Description [Line Items]
Operating lease right-of-use assets | $		$ 105,412		$ 115,375
Albany Lease [Member]
Lessee Lease Description [Line Items]
Operating lease, existence of option to extend			true
840 Winter Street Lease [Member]
Lessee Lease Description [Line Items]
Area of space leased	140,000
Operating lease, description	Separately, the Company entered into an agreement in February 2022, later amended in June 2023, to lease approximately 140,000 square feet of office, general laboratory and planned good manufacturing practice (“GMP”) manufacturing space at 840 Winter Street in Waltham
Cambridge [Member]
Lessee Lease Description [Line Items]
Area of space leased		230,000