Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Loss Carryforwards [Line Items]
Income tax provision	$ 0	$ 0
Percentage of valuation allowance against deferred tax assets	100.00%
Increase in deferred tax assets valuation allowance	$ 7,000	9,200
New York State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards net, expected to expire unutilized and unavailable to offset future federal taxable income	191,100
New York City
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards net, expected to expire unutilized and unavailable to offset future federal taxable income	175,400
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	290,400	307,600
Operating loss carryforwards, annual limitation	28
Operating loss carryforwards net, expected to expire unutilized and unavailable to offset future federal taxable income	200,500
Operating loss carryforwards available for offset future taxable income	107,100
Operating loss carryforwards for unlimited period	105,400
Federal | Research and Development Tax Credit Carryforwards
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	7,400	6,500
Tax credit carryforwards expected to expire unutilized	2,300
Federal | Expire Between 2019 and 2037
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards available for offset future taxable income	1,700
State and City
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	5,000	4,900
State | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	800
State | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	196,000
City | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	300
City | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	195,300
Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 43,300	$ 33,400