Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 19, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unrealized Loss on Securities	$ 83,400		$ 83,400
Convertible preferred stock, Shares issued upon conversion		21,634,898		21,634,898
Loss on extinguishment of convertible promissory note	$ 0	$ 0	$ 0	$ (754)
Series B-2 Convertible Preferred Stock [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Convertible preferred stock, Shares issued upon conversion					2,805,850
Operating Expense [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Increase in the fair value of the derivative liability		$ 0		200
Operating Expense [Member] | Series B-2 Convertible Preferred Stock [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loss on extinguishment of convertible promissory note				$ 800